A121475 - OEIS

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A121475 as a simple table

n	a(n)
0	2
1	3
2	42
3	4
4	4512412933881984
5	2722258935367507708887588480171556995584
6	2305843009213693952
7	6277101735386680763835789423207666416102355444464034512896

[2,3,42,4,4512412933881984, 2722258935367507708887588480171556995584, 2305843009213693952, 62771017353866807638357894232076664161023554444640\ 34512896]