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A139046 as a simple table

n a(n)
1 1
2 2
3 12
4 52
5 1992
6 43472
7 8084672
8 785972800
9 632010796352
10 260819509251776
11 879345967412550400
12 1508148706710022883840
13 20993821611583601278837888
14 147923394778079541856196475392
15 8426633557858801012990635249817088 

[1,2,12,52,1992,43472,8084672,785972800,
 632010796352,260819509251776,879345967412550400,
 1508148706710022883840,20993821611583601278837888,
 147923394778079541856196475392,
 8426633557858801012990635249817088]

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Last modified June 6 09:58 EDT 2024. Contains 373126 sequences. (Running on oeis4.)