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 A050405 Partial sums of A051879. 3

%I

%S 1,15,84,308,882,2142,4620,9108,16731,29029,48048,76440,117572,175644,

%T 255816,364344,508725,697851,942172,1253868,1647030,2137850,2744820,

%U 3488940,4393935,5486481,6796440,8357104

%N Partial sums of A051879.

%D A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 194-196.

%H <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (7,-21,35,-35,21,-7,1).

%F a(n)=C(n+5, 5)*(3n+2)/2.

%F G.f.: (1+8*x)/(1-x)^7.

%t Accumulate[Accumulate[Table[(n+1)(n+2)(n+3)(9n+4)/24,{n,0,40}]]] (* _Harvey P. Dale_, Aug 19 2012 *)

%Y Cf. A051879.

%Y Cf. A093644 ((9, 1) Pascal, column m=6).

%K easy,nonn

%O 0,2

%A _Barry E. Williams_, Dec 21 1999

%E Corrected by _T. D. Noe_, Nov 09 2006

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Last modified October 18 07:00 EDT 2018. Contains 316307 sequences. (Running on oeis4.)