n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 39 |
4 | 189 |
5 | 896 |
6 | 4417 |
7 | 21576 |
8 | 107073 |
9 | 529240 |
10 | 2634775 |
11 | 13093073 |
12 | 65293025 |
13 | 325328452 |
14 | 1623926483 |
15 | 8102847121 |
16 | 40470054325 |
17 | 202092673302 |
18 | 1009726970717 |
19 | 5044555157671 |
20 | 25210265604259 |
21 | 125984999325888 |
22 | 629709173954791 |
23 | 3147443384782430 |
24 | 15733446109267457 |
25 | 78648558624960914 |
[1,2,9,39,189,896,4417,21576,107073,529240, 2634775,13093073,65293025,325328452,1623926483, 8102847121,40470054325,202092673302,1009726970717, 5044555157671,25210265604259,125984999325888, 629709173954791,3147443384782430, 15733446109267457,78648558624960914] |