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A074143
a(1) = 1; a(n) = n * sum {a(k) | k < n}.
+0
8
1, 2, 9, 48, 300, 2160, 17640, 161280, 1632960, 18144000, 219542400, 2874009600, 40475635200, 610248038400, 9807557760000, 167382319104000, 3023343138816000, 57621363351552000, 1155628453883904000
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.
AT&T Labs Research
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