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A166197 as a simple table

n a(n)
0 1
1 3
2 1
3 2
4 6
5 12
6 26
7 90
8 200
9 665
10 3980
11 10515
12 52518
13 433447
14 1973317
15 14252749
16 166762668
17 1065468116
18 11148385916
19 193707228525
20 1758897674635
21 26740845738267
22 672553810724428
23 9032785397690122
24 199494539604910376

[1,3,1,2,6,12,26,90,200,665,3980,10515,52518,
 433447,1973317,14252749,166762668,1065468116,
 11148385916,193707228525,1758897674635,
 26740845738267,672553810724428,9032785397690122,
 199494539604910376]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)