A066120 - OEIS

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A066120 as a simple table

n	a(n)
0	1
1	2
2	24
3	8640
4	653184000
5	114069441024000000
6	598216546007097937920000000000
7	1601591599167888308924824752807936000000000000000

[1,2,24,8640,653184000,114069441024000000, 598216546007097937920000000000, 1601591599167888308924824752807936000000000000000]