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 A162736 G.f. is the polynomial (Product_{k=1..30} (1 - x^(3*k)))/(1-x)^30. 2
 1, 30, 465, 4959, 40890, 277791, 1618199, 8306730, 38329299, 161383520, 627356796, 2272915164, 7734020120, 24874638204, 76028550900, 221849950497, 620471946324, 1669004265525, 4330837858674, 10869702783150, 26449453637412 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS This is a row of the triangle in A162499. Only finitely many terms are nonzero. LINKS G. C. Greubel, Table of n, a(n) for n = 0..1365 (terms 0..1000 from Harvey P. Dale) MATHEMATICA CoefficientList[Series[Times@@(1-x^Range[3, 90, 3])/(1-x)^30, {x, 0, 20}], x] (* Harvey P. Dale, Oct 04 2011 *) PROG (PARI) x='x+O('x^50); A = prod(k=1, 30, (1-x^(3*k)))/(1-x)^30; Vec(A) \\ G. C. Greubel, Jul 07 2018 (MAGMA) m:=50; R:=PowerSeriesRing(Integers(), m); F:=(&*[(1-x^(3*k)): k in [1..30]])/(1-x)^30; Coefficients(R!(F)); // G. C. Greubel, Jul 07 2018 CROSSREFS Sequence in context: A161573 A161976 A162377 * A010982 A022594 A321955 Adjacent sequences:  A162733 A162734 A162735 * A162737 A162738 A162739 KEYWORD nonn AUTHOR N. J. A. Sloane, Dec 02 2009 STATUS approved

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Last modified April 19 07:11 EDT 2019. Contains 322237 sequences. (Running on oeis4.)