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A104989 as a simple table

n a(n)
0 1
1 3
2 13
3 69
4 433
5 3133
6 25657
7 234537
8 2367825
9 26176981
10 314670353
11 4088360569
12 57112939433
13 853922061413
14 13609089281849
15 230346936181465
16 4127180489763649
17 78046835384582069
18 1553536327234953153

[1,3,13,69,433,3133,25657,234537,2367825,26176981,
 314670353,4088360569,57112939433,853922061413,
 13609089281849,230346936181465,4127180489763649,
 78046835384582069,1553536327234953153]

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Last modified October 27 23:26 EDT 2020. Contains 338047 sequences. (Running on oeis4.)