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A272180 as a simple table

n a(n)
0 0
1 2
2 120
3 11880
4 1860480
5 427518000
6 135970773120
7 57274321104000
8 30885807297945600
9 20759078324729606400
10 17018214378110225280000
11 16716468557742686853120000
12 19383353274717848149493760000
13 26198415087179810897268887040000
14 40828604361516687201839617904640000

[0,2,120,11880,1860480,427518000,135970773120,
 57274321104000,30885807297945600,
 20759078324729606400,17018214378110225280000,
 16716468557742686853120000,
 19383353274717848149493760000,
 26198415087179810897268887040000,
 40828604361516687201839617904640000]

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)