A247028 - OEIS

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A247028 as a simple table

n	a(n)
1	2
2	7
3	193
4	19079
5	1823013184807
6	324494495853101147203936847
7	16085434555484907108254435283952049
8	255525859571903290673264616283734506003204622439226993660213169027169

[2,7,193,19079,1823013184807, 324494495853101147203936847, 16085434555484907108254435283952049, 25552585957190329067326461628373450600320462243922\ 6993660213169027169]