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A165960 as a simple table

n a(n)
0 1
1 1
2 2
3 3
4 20
5 100
6 612
7 4389
8 35688
9 325395
10 3288490
11 36489992
12 441093864
13 5770007009
14 81213878830
15 1223895060315
16 19662509071056
17 335472890422812
18 6057979285535388
19 115434096553014565
20 2314691409652237700
21 48723117262650147387
22 1074208020519710570054

[1,1,2,3,20,100,612,4389,35688,325395,3288490,
 36489992,441093864,5770007009,81213878830,
 1223895060315,19662509071056,335472890422812,
 6057979285535388,115434096553014565,
 2314691409652237700,48723117262650147387,
 1074208020519710570054]

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Last modified February 28 07:05 EST 2024. Contains 370387 sequences. (Running on oeis4.)