A270589 - OEIS

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A270589 as a simple table

n	a(n)
1	1
2	2
3	10
4	136
5	16792
6	481484601
7	5752738775151622145
8	32677165184182243545746422896718822871
9	3003270816051953126782801862429770277283389802341096352218029665206283079575

[1,2,10,136,16792,481484601,5752738775151622145, 32677165184182243545746422896718822871, 30032708160519531267828018624297702772833898023410\ 96352218029665206283079575]