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 A133158 Binomial transform of A126568, second binomial transform of A026641. 3
 1, 3, 12, 57, 294, 1578, 8658, 48177, 270774, 1533450, 8736432, 50016090, 287497380, 1658174352, 9591422286, 55618701057, 323225066790, 1882009941570, 10976834700792, 64119701075886, 375057555388884, 2196539772794172, 12878508015774468 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS The Hankel transform of this sequence is 3^n (see A000244). LINKS Table of n, a(n) for n=0..22. Isaac DeJager, Madeleine Naquin, Frank Seidl, Colored Motzkin Paths of Higher Order, VERUM 2019. FORMULA Conjecture: 2*n*a(n) + (-19*n+12)*a(n-1) + 6*(8*n-11)*a(n-2) + 36*(-n+2)*a(n-3) = 0. - R. J. Mathar, Jun 30 2013 CROSSREFS Row sums of triangle in A124575. Sequence in context: A263667 A101106 A165310 * A328295 A194089 A178807 Adjacent sequences: A133155 A133156 A133157 * A133159 A133160 A133161 KEYWORD nonn AUTHOR Philippe Deléham, Oct 08 2007 STATUS approved

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Last modified September 30 19:54 EDT 2023. Contains 365793 sequences. (Running on oeis4.)