A066789 - OEIS

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A066789 as a simple table

n	a(n)
1	1
2	70
3	4686825
4	488526937079580
5	130054841538480192455912505
6	134084922435426494254000700271928170048684
7	759782631286509488749614088922952734321921774350851547360350

[1,70,4686825,488526937079580, 130054841538480192455912505, 134084922435426494254000700271928170048684, 75978263128650948874961408892295273432192177435085\ 1547360350]