A280509 - OEIS

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A280509

a(n) = A051064(A246200(n)); 3-adic valuation of A057889(3*n).

1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 4, 2, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 2, 4, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 5, 1, 2, 3, 1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 4, 1, 1, 2, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 4, 1, 1, 2, 1, 1, 2, 2

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OFFSET

1,3

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10921

Index entries for sequences related to binary expansion of n

FORMULA

a(n) = A007949(A057889(3*n)).

a(n) = A051064(A246200(n)).

PROG

(Scheme) (define (A280509 n) (A051064 (A246200 n)))

CROSSREFS