n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 56 |
3 | 364 |
4 | 2198 |
5 | 12292 |
6 | 65240 |
7 | 330262 |
8 | 1608866 |
9 | 7575967 |
10 | 34636896 |
11 | 154235319 |
12 | 670752411 |
13 | 2855122319 |
14 | 11917598512 |
15 | 48858820584 |
16 | 197008297955 |
17 | 782223365518 |
18 | 3061514606822 |
19 | 11822306812232 |
20 | 45080137355687 |
21 | 169865159676365 |
22 | 632916329409504 |
23 | 2333298558227399 |
[1,7,56,364,2198,12292,65240,330262,1608866, 7575967,34636896,154235319,670752411,2855122319, 11917598512,48858820584,197008297955,782223365518, 3061514606822,11822306812232,45080137355687, 169865159676365,632916329409504,2333298558227399] |