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A264838 as a simple table

n a(n)
1 1
2 2
3 2
4 15
5 68
6 401
7 2179
8 23229
9 213332
10 2642772
11 38611992
12 723385584
13 16909827584
14 343510569552
15 9601049357952
16 305917702264416

[1,2,2,15,68,401,2179,23229,213332,2642772,
 38611992,723385584,16909827584,343510569552,
 9601049357952,305917702264416]

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Last modified December 4 12:55 EST 2021. Contains 349525 sequences. (Running on oeis4.)