A286393 - OEIS

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A286393 as a simple table

n	a(n)
0	1
1	7
2	406
3	5105212
4	4154189102413
5	167633579843887699759
6	331466355732596931093508048522
7	32115447190132359991237336502881651018804
8	152470060954479462517322396167243320349298407119379801

[1,7,406,5105212,4154189102413, 167633579843887699759, 331466355732596931093508048522, 32115447190132359991237336502881651018804, 15247006095447946251732239616724332034929840711937\ 9801]