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A151477 as a simple table

n a(n)
0 1
1 1
2 3
3 10
4 35
5 138
6 566
7 2431
8 10780
9 49067
10 228355
11 1081997
12 5207905
13 25403962
14 125377203
15 625176432
16 3145870880
17 15959346050
18 81557403529
19 419547453308
20 2171222736256
21 11298086327362
22 59085844684247
23 310430932981503
24 1637929078223208
25 8676341846872322
26 46128302460092674
27 246081020287578117

[1,1,3,10,35,138,566,2431,10780,49067,228355,
 1081997,5207905,25403962,125377203,625176432,
 3145870880,15959346050,81557403529,419547453308,
 2171222736256,11298086327362,59085844684247,
 310430932981503,1637929078223208,8676341846872322,
 46128302460092674,246081020287578117]

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Last modified May 28 21:37 EDT 2020. Contains 334690 sequences. (Running on oeis4.)