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A250020 as a simple table

n a(n)
1 20
2 5102
3 246560
4 4732480
5 50383892
6 358850926
7 1914587120
8 8226417240
9 29886098100
10 94991593334
11 270790229072
12 705292752008
13 1702428675220
14 3850911187910
15 8235751257376
16 16772740216208
17 32720682872916 

[20,5102,246560,4732480,50383892,358850926,
 1914587120,8226417240,29886098100,94991593334,
 270790229072,705292752008,1702428675220,
 3850911187910,8235751257376,16772740216208,
 32720682872916]

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Last modified May 14 14:06 EDT 2024. Contains 372533 sequences. (Running on oeis4.)