n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 76 |
6 | 278 |
7 | 1021 |
8 | 3756 |
9 | 13827 |
10 | 50916 |
11 | 187512 |
12 | 690593 |
13 | 2543444 |
14 | 9367525 |
15 | 34500756 |
16 | 127067006 |
17 | 467990629 |
18 | 1723620240 |
19 | 6348133335 |
20 | 23380322908 |
21 | 86110274536 |
22 | 317146150489 |
23 | 1168056674504 |
24 | 4301979997337 |
25 | 15844292751908 |
[1,2,6,21,76,278,1021,3756,13827,50916,187512, 690593,2543444,9367525,34500756,127067006, 467990629,1723620240,6348133335,23380322908, 86110274536,317146150489,1168056674504, 4301979997337,15844292751908] |