n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 8 |
5 | 22 |
6 | 58 |
7 | 158 |
8 | 425 |
9 | 1161 |
10 | 3175 |
11 | 8751 |
12 | 24192 |
13 | 67239 |
14 | 187459 |
15 | 524579 |
16 | 1472086 |
17 | 4142639 |
18 | 11685501 |
19 | 33036492 |
20 | 93583873 |
21 | 265589158 |
22 | 754998424 |
23 | 2149588878 |
24 | 6128914829 |
25 | 17497927510 |
26 | 50017546412 |
27 | 143137957590 |
28 | 410062891934 |
29 | 1175925220607 |
30 | 3375322972597 |
[0,1,3,8,22,58,158,425,1161,3175,8751,24192,67239, 187459,524579,1472086,4142639,11685501,33036492, 93583873,265589158,754998424,2149588878, 6128914829,17497927510,50017546412,143137957590, 410062891934,1175925220607,3375322972597] |