n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 19 |
5 | 63 |
6 | 233 |
7 | 881 |
8 | 3454 |
9 | 13895 |
10 | 56957 |
11 | 237185 |
12 | 1001514 |
13 | 4274113 |
14 | 18421481 |
15 | 80049553 |
16 | 350339864 |
17 | 1543114276 |
18 | 6834599858 |
19 | 30421512784 |
20 | 136016594930 |
21 | 610563182006 |
22 | 2750696838904 |
23 | 12433236054068 |
24 | 56366827142938 |
25 | 256245427672152 |
26 | 1167838731186473 |
27 | 5334787378301284 |
28 | 24422180784557641 |
[1,1,2,6,19,63,233,881,3454,13895,56957,237185, 1001514,4274113,18421481,80049553,350339864, 1543114276,6834599858,30421512784,136016594930, 610563182006,2750696838904,12433236054068, 56366827142938,256245427672152,1167838731186473, 5334787378301284,24422180784557641] |