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A130587 as a simple table

n a(n)
0 1
1 2
2 4
3 9
4 20
5 44
6 96
7 209
8 456
9 998
10 2188
11 4797
12 10508
13 22998
14 50300
15 109925
16 239888
17 522294
18 1133548
19 2450853
20 5277428
21 11317522
22 24175780
23 51455011
24 109151272
25 230849188
26 486943160
27 1024797729
28 2152642748
29 4514814294
30 9457734492
31 19793953547

[1,2,4,9,20,44,96,209,456,998,2188,4797,10508,
 22998,50300,109925,239888,522294,1133548,2450853,
 5277428,11317522,24175780,51455011,109151272,
 230849188,486943160,1024797729,2152642748,
 4514814294,9457734492,19793953547]

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Last modified August 19 20:20 EDT 2019. Contains 326133 sequences. (Running on oeis4.)