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A085139 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 18
5 58
6 194
7 670
8 2370
9 8546
10 31298
11 116102
12 435346
13 1647418
14 6283394
15 24130174
16 93226242
17 362098050
18 1413098370
19 5538138182
20 21788069266
21 86016385274
22 340655956802
23 1353023683486
24 5388230857538
25 21510345134178

[1,1,2,6,18,58,194,670,2370,8546,31298,116102,
 435346,1647418,6283394,24130174,93226242,
 362098050,1413098370,5538138182,21788069266,
 86016385274,340655956802,1353023683486,
 5388230857538,21510345134178]

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Last modified August 4 09:03 EDT 2020. Contains 336201 sequences. (Running on oeis4.)