n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 45 |
5 | 198 |
6 | 919 |
7 | 4445 |
8 | 22215 |
9 | 114000 |
10 | 597790 |
11 | 3191070 |
12 | 17289023 |
13 | 94845796 |
14 | 525838005 |
15 | 2941748627 |
16 | 16585870501 |
17 | 94147448172 |
18 | 537592229784 |
19 | 3085816136840 |
20 | 17795391949590 |
21 | 103051160368120 |
22 | 598997937352830 |
23 | 3493575551891610 |
24 | 20438727738501275 |
25 | 119911429466179978 |
[1,1,3,11,45,198,919,4445,22215,114000,597790, 3191070,17289023,94845796,525838005,2941748627, 16585870501,94147448172,537592229784, 3085816136840,17795391949590,103051160368120, 598997937352830,3493575551891610, 20438727738501275,119911429466179978] |