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A137969 as a simple table

n a(n)
0 1
1 1
2 3
3 21
4 136
5 1032
6 8139
7 66975
8 567417
9 4915386
10 43350639
11 387889254
12 3512655498
13 32133132074
14 296496163113
15 2756279003712
16 25790064341592
17 242699145598212
18 2295564345035100
19 21811226043019788
20 208084639385653938

[1,1,3,21,136,1032,8139,66975,567417,4915386,
 43350639,387889254,3512655498,32133132074,
 296496163113,2756279003712,25790064341592,
 242699145598212,2295564345035100,
 21811226043019788,208084639385653938]

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Last modified July 31 03:12 EDT 2024. Contains 374774 sequences. (Running on oeis4.)