n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 8 |
3 | 28 |
4 | 117 |
5 | 472 |
6 | 1916 |
7 | 7765 |
8 | 31497 |
9 | 127707 |
10 | 517881 |
11 | 2100025 |
12 | 8515772 |
13 | 34532063 |
14 | 140030059 |
15 | 567832091 |
16 | 2302600696 |
17 | 9337214060 |
18 | 37863085664 |
19 | 153537580071 |
20 | 622606110920 |
21 | 2524713292359 |
22 | 10237896957896 |
23 | 41515420557135 |
[1,1,8,28,117,472,1916,7765,31497,127707,517881, 2100025,8515772,34532063,140030059,567832091, 2302600696,9337214060,37863085664,153537580071, 622606110920,2524713292359,10237896957896, 41515420557135] |