The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A229608

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A229608

Square array read by antidiagonals downwards: each row starts with the least prime not in a previous row, and each prime p in a row is followed by the least prime > 2*p.
(history; published version)

#32 by Joerg Arndt at Fri Sep 22 04:26:40 EDT 2017

STATUS

proposed

approved

#31 by Michel Marcus at Fri Sep 22 04:14:30 EDT 2017

STATUS

editing

proposed

#30 by Michel Marcus at Fri Sep 22 04:14:10 EDT 2017

COMMENTS

The above conjecture row 1 = A055496 is true; additionally, row 2 = A065545; row 3 = A065546; the first 5 terms of row 6 are a contiguous subsequence of A064934; and column 1 = A194598(n). - Bob Selcoe, Oct 27 2015; corrected by Peter Munn, Jul 30 2017

STATUS

reviewed

editing

Discussion

Fri Sep 22

04:14

Michel Marcus: sorry, missed another unwanted index

#29 by Joerg Arndt at Fri Sep 22 04:11:05 EDT 2017

STATUS

proposed

reviewed

#28 by Michel Marcus at Fri Sep 22 04:08:10 EDT 2017

STATUS

editing

proposed

#27 by Michel Marcus at Fri Sep 22 04:07:50 EDT 2017

COMMENTS

The above conjecture row 1 = A055496(k) is true; additionally, row 2 = A065545(k); row 3 = A065546(k); the first 5 terms of row 6 are a contiguous subsequence of A064934; and column 1 = A194598(n). - Bob Selcoe, Oct 27 2015; corrected by Peter Munn, Jul 30 2017

STATUS

approved

editing

Discussion

Fri Sep 22

04:08

Michel Marcus: unwanted indices removed

#26 by N. J. A. Sloane at Thu Aug 17 22:36:16 EDT 2017

STATUS

proposed

approved

#25 by Peter Munn at Tue Aug 15 05:43:43 EDT 2017

STATUS

editing

proposed

#24 by Peter Munn at Mon Aug 14 19:11:32 EDT 2017

CROSSREFS

Cf. A055496, A192507, A193507, A229607, A229609, A229610.

Discussion

Mon Aug 14

19:13

Peter Munn: Typo in reference.

#23 by Peter Munn at Sun Jul 30 21:10:18 EDT 2017

COMMENTS

The above conjecture row 1 = A055496(k) is true; additionally, row 2 = A065545(k); row 3 = A065546(k); the first 5 terms of row 6 = are a contiguous subsequence of A064934(k+4); and column 1 = A194598(n). - Bob Selcoe, Oct 27 2015; corrected by _Peter Munn_, Jul 30 2017

Column 1 diverges from A193507 at A(14,1) = 113, a prime not in A193507. 113 is in column 1 as it does not follow a prime in a row: 107 follows 53 and 127 follows 59, the next prime after 53. - Peter Munn, Jul 30 2017

EXAMPLE

43 89 179 359 719 1439 2879

53 107 223 449 907 1823 3659

EXTENSIONS

Incorrect comment deleted and example extended by Peter Munn, Jul 30 2017

Discussion

Mon Aug 14

02:19

OEIS Server: This sequence has not been edited or commented on for a week
yet is not proposed for review.  If it is ready for review, please
visit https://oeis.org/draft/A229608 and click the button that reads
"These changes are ready for review by an OEIS Editor."

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  - The OEIS Server