n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 50 |
4 | 160 |
5 | 892 |
6 | 3794 |
7 | 19560 |
8 | 80112 |
9 | 371948 |
10 | 1614598 |
11 | 7180494 |
12 | 30794746 |
13 | 134269410 |
14 | 574754496 |
15 | 2471353090 |
16 | 10542096528 |
17 | 45057428356 |
18 | 191653403306 |
19 | 814082549052 |
20 | 3444043955350 |
21 | 14537736838038 |
22 | 61174002263338 |
23 | 256838845740468 |
24 | 1075631257186986 |
[1,2,8,50,160,892,3794,19560,80112,371948,1614598, 7180494,30794746,134269410,574754496,2471353090, 10542096528,45057428356,191653403306,814082549052, 3444043955350,14537736838038,61174002263338, 256838845740468,1075631257186986] |