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A013139 as a simple table

n a(n)
0 1
1 4
2 80
3 4288
4 426240
5 67920896
6 15873495040
7 5113806962688
8 2172417489305600
9 1176644688113041408
10 791421023406538096640
11 647183647775891247857664
12 632330839348840678513704960

[1,4,80,4288,426240,67920896,15873495040,
 5113806962688,2172417489305600,
 1176644688113041408,791421023406538096640,
 647183647775891247857664,
 632330839348840678513704960]

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)