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A163277 a(n) = n^7*(n+1)^2/2. 5
0, 2, 576, 17496, 204800, 1406250, 6858432, 26353376, 84934656, 239148450, 605000000, 1403076312, 3027787776, 6149354666, 11859019200, 21870000000, 38788923392, 66474865026, 110505715776, 178774347800, 282240000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

FORMULA

From R. J. Mathar, Feb 05 2010: (Start)

a(n) = n^2*A163275(n).

G.f.: 2*x*(1 +278*x +5913*x^2 +27760*x^3 +38435*x^4 +16434*x^5 +1867*x^6 +32*x^7)/(x-1)^10. (End)

MAPLE

A163277 := proc(n) n^7*(n+1)^2/2 ; end proc: seq(A163277(n), n=0..60) ; \\ R. J. Mathar, Feb 05 2010

MATHEMATICA

Table[(1/2)*n^7*(n + 1)^2, {n, 0, 50}] (* G. C. Greubel, Dec 12 2016 *)

PROG

(PARI) concat([0], Vec(2*x*(1 +278*x +5913*x^2 +27760*x^3 +38435*x^4 +16434*x^5 +1867*x^6 +32*x^7)/(x-1)^10 + O(x^50))) \\ G. C. Greubel, Dec 12 2016

(MAGMA) [n^7*(n+1)^2/2: n in [0..30]]; // Vincenzo Librandi, Dec 13 2016

CROSSREFS

Cf. A006002, A099903, A163102, A163274, A163275, A163276.

Sequence in context: A049364 A159529 A195001 * A003830 A134371 A306635

Adjacent sequences:  A163274 A163275 A163276 * A163278 A163279 A163280

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol, Jul 24 2009

EXTENSIONS

Extended by R. J. Mathar, Feb 05 2010

STATUS

approved

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Last modified May 29 04:33 EDT 2020. Contains 334697 sequences. (Running on oeis4.)