A254048 a(n) = A126760(A007494(n)).

0, 1, 1, 2, 1, 1, 1, 4, 1, 3, 2, 6, 1, 2, 3, 8, 1, 5, 1, 10, 2, 1, 4, 12, 1, 7, 5, 14, 3, 4, 2, 16, 1, 9, 6, 18, 1, 3, 7, 20, 2, 11, 3, 22, 4, 6, 8, 24, 1, 13, 9, 26, 5, 2, 1, 28, 3, 15, 10, 30, 2, 8, 11, 32, 1, 17, 4, 34, 6, 5, 12, 36, 1, 19, 13, 38, 7, 10, 5, 40, 2, 21, 14, 42, 3, 1, 15, 44, 4, 23, 2, 46, 8, 12, 16, 48, 1, 25, 17, 50, 9, 7, 6, 52, 5, 27, 18, 54, 1, 14, 19, 56, 3, 29, 7, 58, 10, 4, 20, 60, 2

Offset

0,4

Links

Antti Karttunen, Table of n, a(n) for n = 0..19683

Formula

a(n) = A126760(A007494(n)).

Other identities:

a(4n) = A126760(n).

a(4n+1) = A126760(3n+1).

a(4n+2) = A126760(2n+1) = A253887(n+1).

a(4n+3) = 2n+2.

For all n >= 1, a(n) = A126760(A139391(n)). [Conjecture. The proof should be easy. Holds at least up to n = 2^25 = 33554432.]

Prog

(Scheme) (define (A254048 n) (A126760 (A007494 n)))

Crossrefs

Cf. A006370, A007494, A126760, A139391, A253887, A254102.

Sequence in context: A143201 A340082 A348647 * A306671 A308210 A112331

Adjacent sequences: A254045 A254046 A254047 * A254049 A254050 A254051

Keyword

nonn

Author

Antti Karttunen, Jan 28 2015

Status

approved