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A011245
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(n+1)*(2*n+1)*(3*n+1)*(4*n+1).
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1
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1, 120, 945, 3640, 9945, 22176, 43225, 76560, 126225, 196840, 293601, 422280, 589225, 801360, 1066185, 1391776, 1786785, 2260440, 2822545, 3483480, 4254201, 5146240, 6171705, 7343280, 8674225, 10178376
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (5,-10,10,-5,1).
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FORMULA
| G.f.: (-1-105*x^3-355*x^2-115*x)/(x-1)^5 [From Maksym Voznyy (voznyy(AT)mail.ru), Aug 10 2009]
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PROG
| (MAGMA) [&*[s*n+1: s in [1..4]]: n in [0..25]]; // Bruno Berselli, May 23 2011
(PARI) a(n)=24*n^4+50*n^3+35*n^2+10*n+1 \\ Charles R Greathouse IV, May 23, 2011
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CROSSREFS
| a(n)=A033593(-n).
Sequence in context: A052627 A206025 A029573 * A092182 A133119 A052777
Adjacent sequences: A011242 A011243 A011244 * A011246 A011247 A011248
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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