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A099012 as a simple table

n a(n)
0 0
1 1
2 3
3 18
4 81
5 405
6 1944
7 9477
8 45927
9 223074
10 1082565
11 5255361
12 25509168
13 123825753
14 601059771
15 2917611090
16 14162371209
17 68745613437
18 333698181192
19 1619805064509
20 7862698824255
21 38166342053346
22 185263315578333

[0,1,3,18,81,405,1944,9477,45927,223074,1082565,
 5255361,25509168,123825753,601059771,2917611090,
 14162371209,68745613437,333698181192,
 1619805064509,7862698824255,38166342053346,
 185263315578333]

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Last modified April 16 10:45 EDT 2024. Contains 371709 sequences. (Running on oeis4.)