Hyperfactorials: Product_{k = 1..n} k^k.
1, 1, 4, 108, 27648, 86400000, 4031078400000, 3319766398771200000
2 seqfan posts
Tue May 8 16:01:22 CEST 2012 [seqfan] Gosper's notes on higher factorials
Thu Nov 20 18:01:47 CET 2008 [seqfan] Re: Integer Sequence Analysis in Mathematica 7
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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