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A129906 as a simple table

n a(n)
1 1
2 20
3 630
4 4480
5 36288
6 3326400
7 444787200
8 5811886080
9 81729648000
10 19760412672000
11 6082255020441600
12 115852476579840000
13 2322315553259520000
14 1077167364120207360000
15 24817936069329577574400
16 596585001666576384000000
17 14936720782466875392000000

[1,20,630,4480,36288,3326400,444787200,5811886080,
 81729648000,19760412672000,6082255020441600,
 115852476579840000,2322315553259520000,
 1077167364120207360000,24817936069329577574400,
 596585001666576384000000,
 14936720782466875392000000]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)