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A022726 as a simple table

n a(n)
0 1
1 2
2 7
3 18
4 49
5 114
6 282
7 624
8 1422
9 3058
10 6597
11 13700
12 28564
13 57698
14 116479
15 230398
16 453698
17 879080
18 1696732
19 3230578
20 6124326
21 11486884
22 21439480
23 39659598
24 73036175
25 133445640
26 242756058
27 438680734
28 789328034
29 1411926186
30 2515574329
31 4458203590
32 7871211452
33 13831782146

[1,2,7,18,49,114,282,624,1422,3058,6597,13700,
 28564,57698,116479,230398,453698,879080,1696732,
 3230578,6124326,11486884,21439480,39659598,
 73036175,133445640,242756058,438680734,789328034,
 1411926186,2515574329,4458203590,7871211452,
 13831782146]

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Last modified April 23 14:15 EDT 2019. Contains 322386 sequences. (Running on oeis4.)