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A124419 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 4
5 10
6 25
7 75
8 225
9 780
10 2704
11 10556
12 41209
13 178031
14 769129
15 3630780
16 17139600
17 87548580
18 447195609
19 2452523325
20 13450200625
21 78697155750
22 460457244900
23 2859220516290
24 17754399678409
25 116482516809889
26 764214897046969
27 5277304280371714

[1,1,1,2,4,10,25,75,225,780,2704,10556,41209,
 178031,769129,3630780,17139600,87548580,447195609,
 2452523325,13450200625,78697155750,460457244900,
 2859220516290,17754399678409,116482516809889,
 764214897046969,5277304280371714]

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Last modified April 19 16:52 EDT 2024. Contains 371794 sequences. (Running on oeis4.)