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 A050405 Partial sums of A051879. 3
 1, 15, 84, 308, 882, 2142, 4620, 9108, 16731, 29029, 48048, 76440, 117572, 175644, 255816, 364344, 508725, 697851, 942172, 1253868, 1647030, 2137850, 2744820, 3488940, 4393935, 5486481, 6796440, 8357104 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 REFERENCES A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 194-196. LINKS Index entries for linear recurrences with constant coefficients, signature (7,-21,35,-35,21,-7,1). FORMULA a(n)=C(n+5, 5)*(3n+2)/2. G.f.: (1+8*x)/(1-x)^7. MATHEMATICA Accumulate[Accumulate[Table[(n+1)(n+2)(n+3)(9n+4)/24, {n, 0, 40}]]] (* Harvey P. Dale, Aug 19 2012 *) CROSSREFS Cf. A051879. Cf. A093644 ((9, 1) Pascal, column m=6). Sequence in context: A252935 A247958 A108674 * A241220 A279740 A281189 Adjacent sequences:  A050402 A050403 A050404 * A050406 A050407 A050408 KEYWORD easy,nonn AUTHOR Barry E. Williams, Dec 21 1999 EXTENSIONS Corrected by T. D. Noe, Nov 09 2006 STATUS approved

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Last modified August 18 14:34 EDT 2018. Contains 313832 sequences. (Running on oeis4.)