n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 34 |
5 | 132 |
6 | 546 |
7 | 2327 |
8 | 10191 |
9 | 45534 |
10 | 206788 |
11 | 951723 |
12 | 4429182 |
13 | 20808186 |
14 | 98550468 |
15 | 470038119 |
16 | 2255684699 |
17 | 10883852112 |
18 | 52769785320 |
19 | 256960840946 |
20 | 1256147650818 |
21 | 6162349332204 |
22 | 30328107189312 |
23 | 149698391878458 |
[1,1,3,9,34,132,546,2327,10191,45534,206788, 951723,4429182,20808186,98550468,470038119, 2255684699,10883852112,52769785320,256960840946, 1256147650818,6162349332204,30328107189312, 149698391878458] |