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A101555 Convolution of A010060 and A000244. 1
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 (list; graph; refs; listen; history; text; internal format)
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: A247952 A183923 A279277 * A033130 A196918 A099098

Adjacent sequences:  A101552 A101553 A101554 * A101556 A101557 A101558

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Dec 06 2004

STATUS

approved

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Last modified November 27 14:10 EST 2020. Contains 338683 sequences. (Running on oeis4.)