A292708 - OEIS

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A292708 as a simple table

n	a(n)
1	4
2	14
3	440
4	14115134
5	466518785395590988060
6	16843102905928252175005299732280541221280287736370800875201510

[4,14,440,14115134,466518785395590988060, 16843102905928252175005299732280541221280287736370\ 800875201510]