n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 13 |
3 | 67 |
4 | 381 |
5 | 2307 |
6 | 14589 |
7 | 95235 |
8 | 636925 |
9 | 4341763 |
10 | 30056445 |
11 | 210731011 |
12 | 1493303293 |
13 | 10678370307 |
14 | 76957679613 |
15 | 558403682307 |
16 | 4075996839933 |
17 | 29909606989827 |
18 | 220510631755773 |
19 | 1632599134961667 |
20 | 12133359132082173 |
[1,3,13,67,381,2307,14589,95235,636925,4341763, 30056445,210731011,1493303293,10678370307, 76957679613,558403682307,4075996839933, 29909606989827,220510631755773,1632599134961667, 12133359132082173] |