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A122069 as a simple table

n a(n)
0 1
1 3
2 18
3 81
4 405
5 1944
6 9477
7 45927
8 223074
9 1082565
10 5255361
11 25509168
12 123825753
13 601059771
14 2917611090
15 14162371209
16 68745613437
17 333698181192
18 1619805064509
19 7862698824255
20 38166342053346
21 185263315578333

[1,3,18,81,405,1944,9477,45927,223074,1082565,
 5255361,25509168,123825753,601059771,2917611090,
 14162371209,68745613437,333698181192,
 1619805064509,7862698824255,38166342053346,
 185263315578333]

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Last modified May 28 22:13 EDT 2024. Contains 372921 sequences. (Running on oeis4.)