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A253113 as a simple table

n a(n)
1 272
2 920
3 6334
4 28600
5 139760
6 502272
7 2259097
8 5670421
9 21399557
10 39120366
11 120865988
12 183106294
13 479657064
14 649963111
15 1500762543
16 1895383751
17 3973980189
18 4787211558
19 9308563998
20 10844855216
21 19852566186
22 22566185885

[272,920,6334,28600,139760,502272,2259097,5670421,
 21399557,39120366,120865988,183106294,479657064,
 649963111,1500762543,1895383751,3973980189,
 4787211558,9308563998,10844855216,19852566186,
 22566185885]

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Last modified December 4 23:05 EST 2022. Contains 358572 sequences. (Running on oeis4.)