n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 7 |
3 | 28 |
4 | 143 |
5 | 701 |
6 | 3580 |
7 | 18376 |
8 | 95471 |
9 | 499231 |
10 | 2626607 |
11 | 13883904 |
12 | 73681316 |
13 | 392323868 |
14 | 2094932728 |
15 | 11214085328 |
16 | 60157698287 |
17 | 323325959395 |
18 | 1740682221829 |
19 | 9385343934124 |
20 | 50671846382743 |
21 | 273913020523933 |
22 | 1482311190765896 |
23 | 8029798017622048 |
24 | 43538300361416708 |
[1,1,7,28,143,701,3580,18376,95471,499231,2626607, 13883904,73681316,392323868,2094932728, 11214085328,60157698287,323325959395, 1740682221829,9385343934124,50671846382743, 273913020523933,1482311190765896,8029798017622048, 43538300361416708] |