The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A082311

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Showing entries 1-10 | older changes

A082311

A Jacobsthal sequence trisection.
(history; published version)

#35 by Alois P. Heinz at Mon Jul 15 17:56:05 EDT 2024

STATUS

proposed

approved

#34 by Stefano Spezia at Mon Jul 15 16:03:37 EDT 2024

STATUS

editing

proposed

#33 by Stefano Spezia at Mon Jul 15 16:00:59 EDT 2024

CROSSREFS

Cf. A001045, A007613, A015565, A024494, A070366, A081374, A082365, A132805.

#32 by Stefano Spezia at Mon Jul 15 04:31:36 EDT 2024

DATA

1, 5, 43, 341, 2731, 21845, 174763, 1398101, 11184811, 89478485, 715827883, 5726623061, 45812984491, 366503875925, 2932031007403, 23456248059221, 187649984473771, 1501199875790165, 12009599006321323, 96076792050570581, 768614336404564651, 6148914691236517205

#31 by Stefano Spezia at Mon Jul 15 04:19:57 EDT 2024

FORMULA

E.g.f.: (cosh(x) + 2*cosh(8*x) - sinh(x) + 2*sinh(8*x))/3. - Stefano Spezia, Jul 15 2024

STATUS

approved

editing

#30 by Charles R Greathouse IV at Thu Sep 08 08:45:10 EDT 2022

PROG

(MAGMAMagma)[2*8^n/3+(-1)^n/3 : n in [0..30]]; // Vincenzo Librandi, Aug 13 2011

Discussion

Thu Sep 08

08:45

OEIS Server: https://oeis.org/edit/global/2944

#29 by R. J. Mathar at Tue Apr 26 07:56:33 EDT 2022

STATUS

editing

approved

#28 by R. J. Mathar at Tue Apr 26 07:56:24 EDT 2022

FORMULA

First trisection of a(n) = A024494(3*n+1). a(n) = 8*a(n-1) + 3*(-1)^n. Sum of digits = A070366. - Paul Curtz, Nov 20 2007

STATUS

approved

editing

#27 by N. J. A. Sloane at Sun Sep 16 21:38:04 EDT 2018

STATUS

proposed

approved

#26 by G. C. Greubel at Sun Sep 16 18:46:47 EDT 2018

STATUS

editing

proposed