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A271442 as a simple table

n a(n)
0 2
1 1
2 50
3 22100
4 6409000
5 32045000
6 1185665000
7 11856650000
8 628402450000
9 1169065690000
10 16338463700000
11 81692318500000
12 875993015300000
13 1388769414500000
14 8054862604100000
15 88701519427300000
16 443507597136500000
17 80548626041000000

[2,1,50,22100,6409000,32045000,1185665000,
 11856650000,628402450000,1169065690000,
 16338463700000,81692318500000,875993015300000,
 1388769414500000,8054862604100000,
 88701519427300000,443507597136500000,
 80548626041000000]

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Last modified December 8 20:37 EST 2021. Contains 349596 sequences. (Running on oeis4.)