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A007579 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 10
5 26
6 76
7 231
8 756
9 2556
10 9096
11 33231
12 126060
13 488488
14 1948232
15 7907185
16 32831370
17 138321690
18 593610420
19 2579109780
20 11377862340
21 50726936820
22 229078351992
23 1043999256966
24 4810194384348
25 22340617618860
26 104742353862360
27 494547143860035

[1,1,2,4,10,26,76,231,756,2556,9096,33231,126060,
 488488,1948232,7907185,32831370,138321690,
 593610420,2579109780,11377862340,50726936820,
 229078351992,1043999256966,4810194384348,
 22340617618860,104742353862360,494547143860035]

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Last modified October 24 01:20 EDT 2018. Contains 316541 sequences. (Running on oeis4.)