A061787 - OEIS

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A061787 as a simple table

n	a(n)
1	1
2	28
3	3153
4	826696
5	388247185
6	285699917796
7	303160806510049
8	438197051187369424
9	827678458937524133601
10	1979247334119251113257580
11	5844566265720101772494382001
12	20886312566113632136127527292568

[1,28,3153,826696,388247185,285699917796, 303160806510049,438197051187369424, 827678458937524133601,1979247334119251113257580, 5844566265720101772494382001, 20886312566113632136127527292568]