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A208117 as a simple table

n a(n)
1 40
2 1600
3 9240
4 53361
5 175560
6 577600
7 1432600
8 3553225
9 7419360
10 15492096
11 28791840
12 53509225
13 91408240
14 156150016
15 250232400
16 401000625
17 611163000
18 931470400
19 1363358920
20 1995498241
21 2824994040
22 3999297600
23 5505737640

[40,1600,9240,53361,175560,577600,1432600,3553225,
 7419360,15492096,28791840,53509225,91408240,
 156150016,250232400,401000625,611163000,931470400,
 1363358920,1995498241,2824994040,3999297600,
 5505737640]

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Last modified December 8 19:21 EST 2021. Contains 349596 sequences. (Running on oeis4.)