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A151989
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A001512 / 24 = (5*n+1)*(5*n+2)*(5*n+3)*(5*n+4)/24.
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3
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1, 126, 1001, 3876, 10626, 23751, 46376, 82251, 135751, 211876, 316251, 455126, 635376, 864501, 1150626, 1502501, 1929501, 2441626, 3049501, 3764376, 4598126, 5563251, 6672876, 7940751, 9381251, 11009376, 12840751, 14891626, 17178876, 19720001, 22533126
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| sum_{k>=0} 1/a(k) = 4*sqrt(10-22/sqrt(5))*Pi/5 [Jaume Oliver Lafont, May 22 2010]
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..10000
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MATHEMATICA
| (Times@@#)/24&/@Table[5n+i, {n, 0, 35}, {i, 4}] (* From Harvey P. Dale, Aug 16 2011 *)
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PROG
| (MAGMA) [(5*n+1)*(5*n+2)*(5*n+3)*(5*n+4)/24: n in [0..30]]; // Vincenzo Librandi, Aug 17 2011
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CROSSREFS
| Sequence in context: A181254 A004008 A126170 * A104678 A154093 A172139
Adjacent sequences: A151986 A151987 A151988 * A151990 A151991 A151992
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KEYWORD
| nonn
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AUTHOR
| M. F. Hasler, Sep 14 2009
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