a(n) = (n-1)^2 * n^(n-2).
1, 12, 144, 2000, 32400, 605052, 12845056, 306110016, 8100000000
3 seqfan posts
Sat Oct 23 09:23:54 CEST 2010 [seqfan] Re: CROSSREFS
Sat Oct 23 08:39:06 CEST 2010 [seqfan] Re: CROSSREFS
Sat Oct 23 00:12:52 CEST 2010 [seqfan] CROSSREFS
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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