A015061 - OEIS

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A015061 as a simple table

n	a(n)
0	1
1	1
2	37
3	47773
4	2230338061
5	3745710394891885
6	226492829959633927321645
7	493024123850119464761454780231085
8	38635442513535592967437553577069552272387245

[1,1,37,47773,2230338061,3745710394891885, 226492829959633927321645, 493024123850119464761454780231085, 38635442513535592967437553577069552272387245]