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A126931 as a simple table

n a(n)
0 1
1 3
2 10
3 33
4 110
5 366
6 1220
7 4065
8 13550
9 45162
10 150540
11 501786
12 1672620
13 5575356
14 18584520
15 61948257
16 206494190
17 688313490
18 2294378300
19 7647926046
20 25493086820
21 84976950468
22 283256501560
23 944188318938
24 3147294396460

[1,3,10,33,110,366,1220,4065,13550,45162,150540,
 501786,1672620,5575356,18584520,61948257,
 206494190,688313490,2294378300,7647926046,
 25493086820,84976950468,283256501560,944188318938,
 3147294396460]

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Last modified April 23 05:37 EDT 2024. Contains 371906 sequences. (Running on oeis4.)