A324056 - OEIS

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A324056 - OEIS

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A324056

a(n) = A000593(A005940(1+n)).

5

1, 1, 4, 1, 6, 4, 13, 1, 8, 6, 24, 4, 31, 13, 40, 1, 12, 8, 32, 6, 48, 24, 78, 4, 57, 31, 124, 13, 156, 40, 121, 1, 14, 12, 48, 8, 72, 32, 104, 6, 96, 48, 192, 24, 248, 78, 240, 4, 133, 57, 228, 31, 342, 124, 403, 13, 400, 156, 624, 40, 781, 121, 364, 1, 18, 14, 56, 12, 84, 48, 156, 8, 112, 72, 288, 32, 372, 104, 320, 6, 168, 96, 384, 48

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OFFSET

0,3

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..8191

Antti Karttunen, Data supplement: n, a(n) computed for n = 0..70327

FORMULA

a(n) = A000593(A005940(1+n)).

a(n) = A324054(n) / A038712(1+n).

PROG

(PARI)

A000593(n) = sigma(n>>valuation(n, 2)); \\ From A000593

A005940(n) = { my(p=2, t=1); n--; until(!n\=2, if((n%2), (t*=p), p=nextprime(p+1))); t }; \\ From A005940

A324056(n) = A000593(A005940(1+n));

CROSSREFS

Cf. A000593, A005940, A038712, A324054.

Sequence in context: A076717 A200360 A228451 * A120422 A342033 A110312

Adjacent sequences: A324053 A324054 A324055 * A324057 A324058 A324059

KEYWORD

nonn

AUTHOR

Antti Karttunen, Feb 14 2019

STATUS

approved