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A217233 as a simple table

n a(n)
0 1
1 1
2 7
3 23
4 89
5 329
6 1231
7 4591
8 17137
9 63953
10 238679
11 890759
12 3324361
13 12406681
14 46302367
15 172802783
16 644908769
17 2406832289
18 8982420391
19 33522849271
20 125108976697
21 466913057513
22 1742543253359
23 6503259955919
24 24270496570321
25 90578726325361

[1,1,7,23,89,329,1231,4591,17137,63953,238679,
 890759,3324361,12406681,46302367,172802783,
 644908769,2406832289,8982420391,33522849271,
 125108976697,466913057513,1742543253359,
 6503259955919,24270496570321,90578726325361]

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)