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Search: id:A055555
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A055555 n!*(n!+1)/2. +0
2
1, 1, 3, 21, 300, 7260, 259560, 12703320, 812871360, 65841128640, 6584096534400, 796675481078400, 114721266640780800, 19387894024929830400, 3800027228319587865600, 855006126362753549184000, 218881568348707987666944000, 63256773252773762936322048000 (list; graph; listen)
OFFSET

0,3

CROSSREFS

Sequence in context: A130032 A126461 A000681 this_sequence A005329 A134528 A118410

Adjacent sequences: A055552 A055553 A055554 this_sequence A055556 A055557 A055558

KEYWORD

nonn

AUTHOR

njas, Jul 19 2000

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.


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