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A336692 Binary weight of 1+sigma(n). 8
1, 1, 2, 1, 3, 3, 2, 1, 3, 3, 3, 4, 4, 3, 3, 1, 3, 2, 3, 4, 2, 3, 3, 5, 1, 4, 3, 4, 5, 3, 2, 1, 3, 5, 3, 4, 4, 5, 4, 5, 4, 3, 4, 4, 5, 3, 3, 6, 4, 5, 3, 4, 5, 5, 3, 5, 3, 5, 5, 4, 6, 3, 4, 1, 4, 3, 3, 7, 3, 3, 3, 3, 4, 5, 6, 4, 3, 4, 3, 6, 5, 7, 4, 4, 5, 3, 5, 5, 5, 6, 4, 4, 2, 3, 5, 7, 4, 4, 5, 5, 5, 5, 4, 5, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..65537

Index entries for sequences related to binary expansion of n

Index entries for sequences related to sigma(n)

FORMULA

a(n) = A000120(1+A000203(n)) = A000120(A088580(n)) = A000120(A332459(n)).

PROG

(PARI) A336692(n) = hammingweight(1+sigma(n));

CROSSREFS

Cf. A000120, A000203, A088580, A175548, A324294, A332459, A336691, A336693, A336694, A336695, A336696.

Sequence in context: A342718 A308530 A302555 * A332434 A262209 A324338

Adjacent sequences:  A336689 A336690 A336691 * A336693 A336694 A336695

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jul 31 2020

STATUS

approved

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Last modified June 21 04:10 EDT 2021. Contains 345354 sequences. (Running on oeis4.)