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A279554 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 15
5 51
6 188
7 733
8 2979
9 12495
10 53708
11 235396
12 1048168
13 4728757
14 21569339
15 99309057
16 460932778
17 2154402107

[1,1,2,5,15,51,188,733,2979,12495,53708,235396,
 1048168,4728757,21569339,99309057,460932778,
 2154402107]

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Last modified February 21 19:02 EST 2020. Contains 332109 sequences. (Running on oeis4.)