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A138211 as a simple table

n a(n)
0 1
1 1
2 1
3 3
4 18
5 166
6 2070
7 32505
8 614918
9 13600671
10 344202033
11 9806468970
12 310553772735
13 10820519947581
14 411338412455910
15 16940944600551504
16 751397442828052440
17 35707884976794347170
18 1810006747594245718317

[1,1,1,3,18,166,2070,32505,614918,13600671,
 344202033,9806468970,310553772735,10820519947581,
 411338412455910,16940944600551504,
 751397442828052440,35707884976794347170,
 1810006747594245718317]

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)