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A143550 as a simple table

n a(n)
0 1
1 1
2 2
3 11
4 38
5 257
6 1040
7 7646
8 33374
9 256718
10 1171454
11 9270560
12 43558064
13 351490167
14 1686018600
15 13799914556
16 67223728270
17 556203232266
18 2741975026412
19 22880729474777
20 113875773363274
21 956800135969601

[1,1,2,11,38,257,1040,7646,33374,256718,1171454,
 9270560,43558064,351490167,1686018600,13799914556,
 67223728270,556203232266,2741975026412,
 22880729474777,113875773363274,956800135969601]

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Last modified June 15 01:41 EDT 2021. Contains 345041 sequences. (Running on oeis4.)