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A196890 as a simple table

n a(n)
0 1
1 1
2 10
3 23
4 72
5 335
6 2220
7 19166
8 217862
9 3428059
10 71688050
11 1884401480
12 63363038340
13 2929516409504
14 178211319638172
15 13290584617658383
16 1240111930777216192
17 158642776309162956097
18 26642849845285577276244
19 5432337767302682299726906

[1,1,10,23,72,335,2220,19166,217862,3428059,
 71688050,1884401480,63363038340,2929516409504,
 178211319638172,13290584617658383,
 1240111930777216192,158642776309162956097,
 26642849845285577276244,5432337767302682299726906]

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Last modified December 4 05:52 EST 2021. Contains 349470 sequences. (Running on oeis4.)