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A215489 as a simple table

n a(n)
1 2
2 1
3 3
4 2
5 4
6 8
7 15
8 63
9 21
10 6
11 167
12 55
13 684
14 2191
15 45
16 1961
17 13671
18 3202
19 43470
20 13828
21 161725
22 161725
23 1104891
24 1327050
25 1327050

[2,1,3,2,4,8,15,63,21,6,167,55,684,2191,45,1961,
 13671,3202,43470,13828,161725,161725,1104891,
 1327050,1327050]

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Last modified October 25 01:40 EDT 2021. Contains 348233 sequences. (Running on oeis4.)