n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 22 |
5 | 74 |
6 | 269 |
7 | 1022 |
8 | 3987 |
9 | 15897 |
10 | 64787 |
11 | 268685 |
12 | 1130049 |
13 | 4810797 |
14 | 20700879 |
15 | 89918115 |
16 | 393811281 |
17 | 1737451533 |
18 | 7716025961 |
19 | 34470611627 |
20 | 154822298289 |
21 | 698772455153 |
22 | 3167909310263 |
23 | 14420624239207 |
24 | 65891331074973 |
25 | 302120467333277 |
26 | 1389723243292295 |
27 | 6411702376827157 |
28 | 29663748424179837 |
[1,1,2,7,22,74,269,1022,3987,15897,64787,268685, 1130049,4810797,20700879,89918115,393811281, 1737451533,7716025961,34470611627,154822298289, 698772455153,3167909310263,14420624239207, 65891331074973,302120467333277,1389723243292295, 6411702376827157,29663748424179837] |