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A336696 Sum of odd divisors of 1+sigma(n). 5
1, 1, 6, 1, 8, 14, 13, 1, 8, 20, 14, 30, 24, 31, 31, 1, 20, 6, 32, 44, 48, 38, 31, 62, 1, 44, 42, 80, 32, 74, 48, 1, 57, 72, 57, 24, 56, 62, 80, 112, 44, 98, 78, 108, 80, 74, 57, 156, 30, 48, 74, 156, 72, 133, 74, 133, 121, 112, 62, 183, 104, 98, 192, 1, 108, 180, 96, 128, 98, 180, 74, 57, 124, 144, 156, 192, 98 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..16384

Antti Karttunen, Data supplement: n, a(n) computed for n = 1..65537

Index entries for sequences related to sigma(n)

FORMULA

a(n) = A000593(1+A000203(n)) = A000593(A088580(n)) = A000593(A332459(n)).

PROG

(PARI)

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

A336696(n) = A000593(1+sigma(n));

CROSSREFS

Cf. A000203, A000593, A088580, A193337, A324294, A332459, A336691, A336692, A336693, A336694, A336696.

Sequence in context: A011490 A011395 A140248 * A127169 A202351 A111507

Adjacent sequences:  A336693 A336694 A336695 * A336697 A336698 A336699

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jul 31 2020

STATUS

approved

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Last modified August 1 03:47 EDT 2021. Contains 346379 sequences. (Running on oeis4.)