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A201951 as a simple table

n a(n)
0 1
1 1
2 1
3 3
4 6
5 13
6 33
7 85
8 234
9 675
10 2032
11 6367
12 20677
13 69442
14 240529
15 857634
16 3141970
17 11808611
18 45464065
19 179088744
20 720947705
21 2962994169
22 12420658682
23 53061133078
24 230828047288
25 1021809688593
26 4599749893986
27 21043392417004
28 97784119963565
29 461277854065112

[1,1,1,3,6,13,33,85,234,675,2032,6367,20677,69442,
 240529,857634,3141970,11808611,45464065,179088744,
 720947705,2962994169,12420658682,53061133078,
 230828047288,1021809688593,4599749893986,
 21043392417004,97784119963565,461277854065112]

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Last modified October 23 01:49 EDT 2020. Contains 337962 sequences. (Running on oeis4.)