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A131481 as a simple table

n a(n)
1 1
2 1
3 1
4 3
5 4
6 11
7 23
8 62
9 149
10 409
11 1066
12 2931
13 7981
14 22166
15 61508
16 172267
17 483088
18 1361475
19 3845139
20 10894630 

[1,1,1,3,4,11,23,62,149,409,1066,2931,7981,22166,
 61508,172267,483088,1361475,3845139,10894630]

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Last modified May 13 18:50 EDT 2024. Contains 372522 sequences. (Running on oeis4.)