A260852 - OEIS

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A260852 as a simple table

n	a(n)
1	13
2	439
3	27961
4	522134761
5	21107054541321649
6	12345678910987654321
7	24197857203266734883076090685781525281

[13,439,27961,522134761,21107054541321649, 12345678910987654321, 24197857203266734883076090685781525281]