A101555 Convolution of A010060 and A000244.

0, 1, 4, 12, 37, 111, 333, 1000, 3001, 9003, 27009, 81028, 243084, 729253, 2187760, 6563280, 19689841, 59069523, 177208569, 531625708, 1594877124, 4784631373, 14353894120, 43061682360, 129185047080, 387555141241, 1162665423724

Offset

0,3

Comments

A Thue-Morse convolution.

Links

G. C. Greubel, Table of n, a(n) for n = 0..1000

Formula

a(n) = Sum_{k=0..n} A010060(n-k) * 3^k.

Mathematica

Table[Sum[ThueMorse[n - k]*3^k, {k, 0, n}], {n, 0, 100}] (* G. C. Greubel, May 23 2018 *)

Crossrefs

Cf. A000244, A010060.

Sequence in context: A183923 A349053 A279277 * A033130 A196918 A099098

Adjacent sequences: A101552 A101553 A101554 * A101556 A101557 A101558

Keyword

easy,nonn

Author

Paul Barry, Dec 06 2004

Status

approved