A143659 - OEIS

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A143659 as a simple table

n	a(n)
0	1
1	2
2	196
3	75272
4	599466256
5	28838245503008
6	22463213552677201984
7	123818965842734619629420672
8	9830731407624872890044690474098944
9	6011432546485776316904414215762657381908992

[1,2,196,75272,599466256,28838245503008, 22463213552677201984,123818965842734619629420672, 9830731407624872890044690474098944, 6011432546485776316904414215762657381908992]