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A146831 as a simple table

n a(n)
1 1
2 1
3 1
4 17
5 49
6 317
7 3643
8 63437
9 1864637
10 68228177
11 3719926503
12 324717444923
13 42997787423811

[1,1,1,17,49,317,3643,63437,1864637,68228177,
 3719926503,324717444923,42997787423811]

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Last modified October 16 13:33 EDT 2021. Contains 348042 sequences. (Running on oeis4.)