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A127235
a(n) = n! (2*sum(1..n-1))!.
+0
3
1, 4, 4320, 11496038400, 291948240981196800000, 190982059064777562218142105600000000, 7081230833474514688657438735472338312479375360000000000
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Maintained by
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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.
AT&T Labs Research
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