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A218681 as a simple table

n a(n)
0 1
1 1
2 2
3 17
4 248
5 8044
6 499033
7 62625238
8 15947986557
9 8220983161264
10 8675909809528468
11 18709697284980554577
12 82551047593942653184220
13 747564468621251440782891798
14 13885138852461763218258064204207
15 529723356811556257370919794910913765

[1,1,2,17,248,8044,499033,62625238,15947986557,
 8220983161264,8675909809528468,
 18709697284980554577,82551047593942653184220,
 747564468621251440782891798,
 13885138852461763218258064204207,
 529723356811556257370919794910913765]

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Last modified September 27 19:34 EDT 2021. Contains 347694 sequences. (Running on oeis4.)