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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
FORMULA
a(n) = A000120(1+A000203(n)) = A000120(A088580(n)) = A000120(A332459(n)).
PROG
(PARI) A336692(n) = hammingweight(1+sigma(n));
CROSSREFS
Sequence in context: A308530 A302555 A355255 * A332434 A262209 A324338
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jul 31 2020
STATUS
approved

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Last modified June 21 03:54 EDT 2024. Contains 373540 sequences. (Running on oeis4.)