n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 7 |
5 | 17 |
6 | 51 |
7 | 163 |
8 | 561 |
9 | 2004 |
10 | 7391 |
11 | 27873 |
12 | 107050 |
13 | 417152 |
14 | 1645339 |
15 | 6555752 |
16 | 26348334 |
17 | 106691779 |
18 | 434851380 |
19 | 1782551286 |
20 | 7344326285 |
21 | 30397197514 |
22 | 126324028956 |
23 | 526911437207 |
24 | 2205163133586 |
25 | 9256931835831 |
26 | 38967696710845 |
[1,1,2,3,7,17,51,163,561,2004,7391,27873,107050, 417152,1645339,6555752,26348334,106691779, 434851380,1782551286,7344326285,30397197514, 126324028956,526911437207,2205163133586, 9256931835831,38967696710845] |