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A005773 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 13
5 35
6 96
7 267
8 750
9 2123
10 6046
11 17303
12 49721
13 143365
14 414584
15 1201917
16 3492117
17 10165779
18 29643870
19 86574831
20 253188111
21 741365049
22 2173243128
23 6377181825
24 18730782252
25 55062586341
26 161995031226
27 476941691177

[1,1,2,5,13,35,96,267,750,2123,6046,17303,49721,
 143365,414584,1201917,3492117,10165779,29643870,
 86574831,253188111,741365049,2173243128,
 6377181825,18730782252,55062586341,161995031226,
 476941691177]

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Last modified May 22 03:49 EDT 2018. Contains 304403 sequences. (Running on oeis4.)