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A147212 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 3
6 9
7 23
8 55
9 315
10 2117
11 14227
12 107639
13 1242577
14 18337443
15 306941589
16 6236872411
17 166949397689
18 5617277183949
19 229023263912585
20 11581498844555427

[1,1,1,1,3,9,23,55,315,2117,14227,107639,1242577,
 18337443,306941589,6236872411,166949397689,
 5617277183949,229023263912585,11581498844555427]

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Last modified October 4 19:10 EDT 2022. Contains 357239 sequences. (Running on oeis4.)