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A001261
Number of permutations of length n by rises.
(Formerly M4273 N1786)
+0
5
1, 6, 63, 616, 6678, 77868, 978978, 13216104, 190899423, 2939850914, 48106651593, 833848627248, 15265844099324, 294412707629208, 5966764207952724, 126793739418994416, 2819296088257641741, 65470320271760790078
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 19 21:04 EST 2009. Contains 171054 sequences.
AT&T Labs Research
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