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A140990 as a simple table

n a(n)
1 1
2 3
3 28
4 905
5 103126
6 43437282
7 66141208960
8 385335180349569
9 8212830157184175946
10 683805150345009276656138
11 209730232681034628698652412600
12 254785524744054762580308183579130562 

[1,3,28,905,103126,43437282,66141208960,
 385335180349569,8212830157184175946,
 683805150345009276656138,
 209730232681034628698652412600,
 254785524744054762580308183579130562]

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Last modified April 25 07:53 EDT 2024. Contains 371964 sequences. (Running on oeis4.)