A258670 - OEIS

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A258670 as a simple table

n	a(n)
0	0
1	1
2	13
3	43561
4	455366036161
5	60209252317216962943201
6	291857679749953126623181556402787323521
7	120972618144269517756284629487432992029777542693069847287041

[0,1,13,43561,455366036161, 60209252317216962943201, 291857679749953126623181556402787323521, 12097261814426951775628462948743299202977754269306\ 9847287041]