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Search: id:A050984
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A050984 de Bruijn's s(5,n). +0
3
1, 30, 5730, 1696800, 613591650, 248832363780, 108702332138400, 50030418256790400, 23933662070438513250, 11795304320307625903500, 5952113838155498195161980, 3061813957188788125283450400 (list; graph; listen)
OFFSET

0,2

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

MATHEMATICA

Sum[ (-1)^(k+n)Binomial[ 2n, k ]^5, {k, 0, 2n} ]

CROSSREFS

Cf. A000984, A006480, A050983.

Adjacent sequences: A050981 A050982 A050983 this_sequence A050985 A050986 A050987

Sequence in context: A001459 A115465 A127849 this_sequence A087216 A059049 A056071

KEYWORD

nonn

AUTHOR

Eric Weisstein (eric(AT)weisstein.com)

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.


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