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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.)