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A303835 as a simple table

n a(n)
0 1
1 1
2 2
3 3
4 8
5 19
6 64
7 212
8 833
9 3360
10 14476
11 63848
12 289892
13 1338000
14 6275589
15 29791100
16 142973014
17 692507861
18 3382070233
19 16638445745
20 82395500651
21 410463736691
22 2055858519575
23 10347925039015
24 52321093290715
25 265648012207312
26 1353953547877556
27 6925400869302520

[1,1,2,3,8,19,64,212,833,3360,14476,63848,289892,
 1338000,6275589,29791100,142973014,692507861,
 3382070233,16638445745,82395500651,410463736691,
 2055858519575,10347925039015,52321093290715,
 265648012207312,1353953547877556,6925400869302520]

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Last modified July 15 14:07 EDT 2019. Contains 325030 sequences. (Running on oeis4.)