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A145958 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 9
7 19
8 37
9 135
10 441
11 1879
12 9853
13 53945
14 336895
15 2463469
16 20551403
17 200816385
18 2276422523
19 29317863291
20 437152357559
21 7466970790985
22 147328291419831
23 3346732661121193

[1,1,1,1,1,9,19,37,135,441,1879,9853,53945,336895,
 2463469,20551403,200816385,2276422523,29317863291,
 437152357559,7466970790985,147328291419831,
 3346732661121193]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)