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A324904 The 2-adic valuation of A318466(n), where A318466(n) = 2*n OR sigma(n). 4
0, 0, 1, 0, 1, 2, 1, 0, 0, 1, 1, 2, 1, 2, 1, 0, 1, 0, 1, 1, 1, 2, 1, 2, 0, 1, 1, 3, 1, 2, 1, 0, 1, 1, 1, 0, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 0, 0, 1, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 2, 1, 0, 1, 2, 1, 1, 1, 2, 1, 0, 1, 1, 1, 2, 1, 2, 1, 1, 0, 1, 1, 3, 1, 2, 1, 2, 1, 1, 1, 3, 1, 2, 1, 2, 1, 0, 1, 0, 1, 2, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

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(A318466(n)).

a(n) = A324902(n) + A324903(n).

PROG

(PARI)

A318466(n) = bitor(2*n, sigma(n));

A324904(n) = valuation(A318466(n), 2);

CROSSREFS

Cf. A000203, A001065, A003986, A007814, A318466, A324884, A324902, A324903, A324906.

Sequence in context: A334744 A136567 A336569 * A109708 A035468 A263860

Adjacent sequences:  A324901 A324902 A324903 * A324905 A324906 A324907

KEYWORD

nonn

AUTHOR

Antti Karttunen, Mar 28 2019

STATUS

approved

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Last modified June 19 09:09 EDT 2021. Contains 345126 sequences. (Running on oeis4.)