n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 6 |
4 | 19 |
5 | 50 |
6 | 158 |
7 | 492 |
8 | 1635 |
9 | 5466 |
10 | 18794 |
11 | 65332 |
12 | 230414 |
13 | 820052 |
14 | 2945436 |
15 | 10654808 |
16 | 38795523 |
17 | 142045610 |
18 | 522694866 |
19 | 1931912036 |
20 | 7169014298 |
21 | 26698782108 |
22 | 99756713732 |
23 | 373839656616 |
24 | 1404795235438 |
25 | 5292114330180 |
[1,1,3,6,19,50,158,492,1635,5466,18794,65332, 230414,820052,2945436,10654808,38795523,142045610, 522694866,1931912036,7169014298,26698782108, 99756713732,373839656616,1404795235438, 5292114330180] |