n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 34 |
4 | 147 |
5 | 684 |
6 | 3341 |
7 | 16896 |
8 | 87702 |
9 | 464566 |
10 | 2501178 |
11 | 13646625 |
12 | 75289022 |
13 | 419301351 |
14 | 2354121750 |
15 | 13309905653 |
16 | 75715795119 |
17 | 433063793430 |
18 | 2488921730886 |
19 | 14366319150072 |
20 | 83246947358766 |
21 | 484082947060300 |
22 | 2823980738817453 |
23 | 16522429720210884 |
24 | 96928401308507100 |
[1,3,9,34,147,684,3341,16896,87702,464566,2501178, 13646625,75289022,419301351,2354121750, 13309905653,75715795119,433063793430, 2488921730886,14366319150072,83246947358766, 484082947060300,2823980738817453, 16522429720210884,96928401308507100] |