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A005635 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 3
5 8
6 36
7 110
8 666
9 3250
10 23436
11 125198
12 1037520
13 7241272
14 66360960
15 500827928
16 5080370400
17 45926666984
18 508032504000
19 4919789029480
20 59256857923200
21 656763542278304
22 8532986822438400
23 100525959568386848
24 1405335514253932800
25 18431883489984091552

[1,1,1,1,3,8,36,110,666,3250,23436,125198,1037520,
 7241272,66360960,500827928,5080370400,45926666984,
 508032504000,4919789029480,59256857923200,
 656763542278304,8532986822438400,
 100525959568386848,1405335514253932800,
 18431883489984091552]

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Last modified June 6 23:38 EDT 2024. Contains 373136 sequences. (Running on oeis4.)