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0, 4, 64, 1296, 32768, 1000000, 35831808, 1475789056, 68719476736, 3570467226624, 204800000000000, 12855002631049216, 876488338465357824, 64509974703297150976, 5097655355238390956032, 430467210000000000000000, 38685626227668133590597632
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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MAPLE
| restart:a:=n->mul(2*sum(1, j=2..n), k=1..n): seq(a(n), n=1..17); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 01 2009]
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MATHEMATICA
| Table[(2n)^(n+1), {n, 0, 20}] (* From Harvey P. Dale, May 03 2011 *)
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CROSSREFS
| Sequence in context: A152923 A085807 A014729 * A146341 A091483 A050636
Adjacent sequences: A085529 A085530 A085531 * A085533 A085534 A085535
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jul 05 2003
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