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A220238 as a simple table

n a(n)
1 1
2 6
3 23
4 78
5 292
6 1066
7 3922
8 14420
9 53082
10 194996
11 716575
12 2632158
13 9670362
14 35522394
15 130493059
16 479334100
17 1760731483
18 6467453104
19 23755979899
20 87258200522
21 320507504035
22 1177245881354
23 4324093291463
24 15882595755420

[1,6,23,78,292,1066,3922,14420,53082,194996,
 716575,2632158,9670362,35522394,130493059,
 479334100,1760731483,6467453104,23755979899,
 87258200522,320507504035,1177245881354,
 4324093291463,15882595755420]

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Last modified November 30 12:38 EST 2023. Contains 367461 sequences. (Running on oeis4.)