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A273700 as a simple table

n a(n)
0 1
1 4
2 33
3 185
4 805
5 3165
6 12757
7 50293
8 199021
9 795365
10 3176493
11 12691253
12 50744213
13 202926957
14 811616853
15 3246268213 

[1,4,33,185,805,3165,12757,50293,199021,795365,
 3176493,12691253,50744213,202926957,811616853,
 3246268213]

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Last modified May 1 13:18 EDT 2024. Contains 372172 sequences. (Running on oeis4.)