A259452 - OEIS

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A259452 as a simple table

n	a(n)
0	1
1	1
2	252
3	578005
4	6190034016
5	214265281290061
6	19157603395806362772
7	3800502511986185228829385
8	1498722661993096106927612109936
9	1081056808393919319749313795137642521
10	1336319624105519211256870506149168604698792

[1,1,252,578005,6190034016,214265281290061, 19157603395806362772,3800502511986185228829385, 1498722661993096106927612109936, 1081056808393919319749313795137642521, 1336319624105519211256870506149168604698792]