n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 37 |
4 | 149 |
5 | 636 |
6 | 2813 |
7 | 12695 |
8 | 57922 |
9 | 265809 |
10 | 1223521 |
11 | 5640748 |
12 | 26026505 |
13 | 120137307 |
14 | 554669594 |
15 | 2561176781 |
16 | 11826871933 |
17 | 54615158940 |
18 | 252210521317 |
19 | 1164706900879 |
20 | 5378632571666 |
21 | 24838652091993 |
22 | 114705606355625 |
23 | 529714071477452 |
[1,3,10,37,149,636,2813,12695,57922,265809, 1223521,5640748,26026505,120137307,554669594, 2561176781,11826871933,54615158940,252210521317, 1164706900879,5378632571666,24838652091993, 114705606355625,529714071477452] |