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A109995 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 5
5 18
6 86
7 549
8 4647
9 52060
10 772976
11 15240116
12 400345371
13 14063594530
14 663256392496
15 42161077371566
16 3625838175218123
17 423372648479289300
18 67333725775723184308
19 14628921614102655999804
20 4352732830667872529962044

[1,1,1,2,5,18,86,549,4647,52060,772976,15240116,
 400345371,14063594530,663256392496,42161077371566,
 3625838175218123,423372648479289300,
 67333725775723184308,14628921614102655999804,
 4352732830667872529962044]

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Last modified June 17 23:25 EDT 2024. Contains 373468 sequences. (Running on oeis4.)