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A147453 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 3
6 1
7 15
8 9
9 105
10 33
11 2514
12 927
13 80722
14 22331
15 4773446
16 785549
17 420563686
18 56689127
19 72421134415
20 8452376637
21 24510814953678
22 2212845668155 

[1,1,1,1,3,1,15,9,105,33,2514,927,80722,22331,
 4773446,785549,420563686,56689127,72421134415,
 8452376637,24510814953678,2212845668155]

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Last modified April 19 16:08 EDT 2024. Contains 371794 sequences. (Running on oeis4.)