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A292556 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 4
5 9
6 20
7 48
8 115
9 286
10 719
11 1842
12 4766
13 12485
14 32970
15 87802
16 235355
17 634771
18 1720940
19 4688041
20 12824394
21 35216524
22 97039824
23 268238379
24 743596131
25 2066801045
26 5758552717
27 16080588286
28 44997928902
29 126160000878
30 354349643101
31 996946927831

[1,1,1,2,4,9,20,48,115,286,719,1842,4766,12485,
 32970,87802,235355,634771,1720940,4688041,
 12824394,35216524,97039824,268238379,743596131,
 2066801045,5758552717,16080588286,44997928902,
 126160000878,354349643101,996946927831]

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Last modified February 22 05:58 EST 2018. Contains 299430 sequences. (Running on oeis4.)