n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 23 |
5 | 71 |
6 | 231 |
7 | 743 |
8 | 2431 |
9 | 7999 |
10 | 26563 |
11 | 88683 |
12 | 297551 |
13 | 1002015 |
14 | 3385175 |
15 | 11466887 |
16 | 38933183 |
17 | 132454719 |
18 | 451423203 |
19 | 1540920939 |
20 | 5267257103 |
21 | 18027478847 |
22 | 61770328227 |
23 | 211872505243 |
24 | 727411948351 |
25 | 2499560376671 |
[1,1,3,7,23,71,231,743,2431,7999,26563,88683, 297551,1002015,3385175,11466887,38933183, 132454719,451423203,1540920939,5267257103, 18027478847,61770328227,211872505243,727411948351, 2499560376671] |