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A201731 as a simple table

n a(n)
1 1
2 4
3 54
4 1544
5 75750
6 5676492
7 603041334
8 86210654224
9 15958892198070
10 3713676157320020
11 1061084890984465446
12 365202873520507832856
13 149027843082185351506950
14 71144948740332156241755868
15 39282974873393643411310747350
16 24840594864924259316810487005216

[1,4,54,1544,75750,5676492,603041334,86210654224,
 15958892198070,3713676157320020,
 1061084890984465446,365202873520507832856,
 149027843082185351506950,
 71144948740332156241755868,
 39282974873393643411310747350,
 24840594864924259316810487005216]

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Last modified March 29 10:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)