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A152268 as a simple table

n a(n)
0 0
1 1
2 7
3 41
4 231
5 1289
6 7175
7 39913
8 221991
9 1234633
10 6866503
11 38188457
12 212387175
13 1181202569
14 6569320583
15 36535623529
16 203194800039
17 1130078612041
18 6284991883975
19 34954314291497
20 194400264968679
21 1081167340448777

[0,1,7,41,231,1289,7175,39913,221991,1234633,
 6866503,38188457,212387175,1181202569,6569320583,
 36535623529,203194800039,1130078612041,
 6284991883975,34954314291497,194400264968679,
 1081167340448777]

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Last modified November 24 10:48 EST 2020. Contains 338612 sequences. (Running on oeis4.)