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A172621 as a simple table

na(n)
10
20
30
40
50
6720
73758757240
857952896096182976
92018328183128437950016800
10162526525004284727135887319788800
1129785621316391113552729016416250323294253

[0,0,0,0,0,720,3758757240,57952896096182976,
 2018328183128437950016800,
 162526525004284727135887319788800,
 29785621316391113552729016416250323294253]

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Last modified January 9 16:10 EST 2025. Contains 379701 sequences.
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