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A324902 The 2-adic valuation of A318456(n), where A318456(n) = n OR (sigma(n)-n). 3
0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 0, 2, 0, 0, 0, 1, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 2, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 0, 0, 0, 0, 1, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,12

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) = A007814(A318456(n)).

a(n) = A324904(n) - A324903(n).

PROG

(PARI)

A318456(n) = bitor(n, sigma(n)-n);

A324902(n) = valuation(A318456(n), 2);

CROSSREFS

Cf. A000203, A001065, A003986, A007814, A318456, A324882, A324903, A324904.

Sequence in context: A219484 A060396 A195470 * A252370 A045827 A070103

Adjacent sequences:  A324899 A324900 A324901 * A324903 A324904 A324905

KEYWORD

nonn

AUTHOR

Antti Karttunen, Mar 28 2019

STATUS

approved

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Last modified May 19 02:45 EDT 2019. Contains 323377 sequences. (Running on oeis4.)