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A212391 as a simple table

n a(n)
1 1
2 1
3 3
4 14
5 80
6 516
7 3608
8 26729
9 206808
10 1655232
11 13612512
12 114466491
13 980575020
14 8533242324
15 75267759072
16 671721353474
17 6056517394512
18 55104831724236
19 505422858053560
20 4669306663437888
21 43418090784597696
22 406109012334694211
23 3818890067546807794

[1,1,3,14,80,516,3608,26729,206808,1655232,
 13612512,114466491,980575020,8533242324,
 75267759072,671721353474,6056517394512,
 55104831724236,505422858053560,4669306663437888,
 43418090784597696,406109012334694211,
 3818890067546807794]

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Last modified April 25 16:59 EDT 2019. Contains 322461 sequences. (Running on oeis4.)