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A252411 as a simple table

n a(n)
1 426
2 1224
3 3302
4 6231
5 21819
6 63428
7 122653
8 433272
9 1264088
10 2446973
11 8647751
12 25240256
13 48858289
14 172693010
15 504163906
16 975786403
17 3449387269
18 10072591598
19 19492346563
20 68913269330
21 201282072654
22 389463616027
23 1377074355675

[426,1224,3302,6231,21819,63428,122653,433272,
 1264088,2446973,8647751,25240256,48858289,
 172693010,504163906,975786403,3449387269,
 10072591598,19492346563,68913269330,201282072654,
 389463616027,1377074355675]

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Last modified April 16 18:53 EDT 2021. Contains 343050 sequences. (Running on oeis4.)