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A208072 as a simple table

n a(n)
1 20
2 400
3 432
4 2688
5 11424
6 44064
7 198000
8 844800
9 3542544
10 15213984
11 64859616
12 275633280
13 1175819856
14 5010674496
15 21340192176
16 90942560256
17 387500834976
18 1650940063776
19 7034502996720
20 29972774288640
21 127706156346384

[20,400,432,2688,11424,44064,198000,844800,
 3542544,15213984,64859616,275633280,1175819856,
 5010674496,21340192176,90942560256,387500834976,
 1650940063776,7034502996720,29972774288640,
 127706156346384]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)