n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 12 |
4 | 31 |
5 | 84 |
6 | 245 |
7 | 752 |
8 | 2413 |
9 | 7991 |
10 | 27104 |
11 | 93605 |
12 | 327886 |
13 | 1161735 |
14 | 4155323 |
15 | 14982399 |
16 | 54393829 |
17 | 198666117 |
18 | 729443563 |
19 | 2690890444 |
20 | 9968312790 |
21 | 37066929338 |
22 | 138304185107 |
23 | 517646986719 |
24 | 1942966098461 |
25 | 7311862919106 |
26 | 27582428518833 |
27 | 104279585166245 |
[1,2,5,12,31,84,245,752,2413,7991,27104,93605, 327886,1161735,4155323,14982399,54393829, 198666117,729443563,2690890444,9968312790, 37066929338,138304185107,517646986719, 1942966098461,7311862919106,27582428518833, 104279585166245] |