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A209243 as a simple table

n a(n)
0 0
1 1
2 6
3 25
4 88
5 285
6 882
7 2661
8 7916
9 23381
10 68850
11 202621
12 596768
13 1760289
14 5201854
15 15401317
16 45682536
17 135728009
18 403864570
19 1203278513
20 3589064828
21 10715405153
22 32017223498
23 95730557865
24 286392391568
25 857187336029

[0,1,6,25,88,285,882,2661,7916,23381,68850,202621,
 596768,1760289,5201854,15401317,45682536,
 135728009,403864570,1203278513,3589064828,
 10715405153,32017223498,95730557865,286392391568,
 857187336029]

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Last modified April 26 15:35 EDT 2024. Contains 372003 sequences. (Running on oeis4.)