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A273680 as a simple table

n a(n)
0 1
1 5
2 17
3 61
4 229
5 913
6 3537
7 13749
8 52929
9 207221
10 823365
11 3278237
12 13091905
13 52332353
14 209433741
15 837601361 

[1,5,17,61,229,913,3537,13749,52929,207221,823365,
 3278237,13091905,52332353,209433741,837601361]

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)