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A220704 as a simple table

n a(n)
1 1
2 1
3 3
4 13
5 107
6 1617
7 44976
8 2282408
9 216083336
10 37166744488
11 11934907610044
12 6974153590170208
13 7595477025017870022
14 15083748097547577433271
15 55729708477784939752304144
16 376141278066033748724918163244

[1,1,3,13,107,1617,44976,2282408,216083336,
 37166744488,11934907610044,6974153590170208,
 7595477025017870022,15083748097547577433271,
 55729708477784939752304144,
 376141278066033748724918163244]

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Last modified June 13 00:57 EDT 2021. Contains 344980 sequences. (Running on oeis4.)