n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 55 |
3 | 439 |
4 | 3511 |
5 | 28087 |
6 | 224695 |
7 | 1797559 |
8 | 14380471 |
9 | 115043767 |
10 | 920350135 |
11 | 7362801079 |
12 | 58902408631 |
13 | 471219269047 |
14 | 3769754152375 |
15 | 30158033218999 |
16 | 241264265751991 |
17 | 1930114126015927 |
18 | 15440913008127415 |
19 | 123527304065019319 |
20 | 988218432520154551 |
21 | 7905747460161236407 |
[1,7,55,439,3511,28087,224695,1797559,14380471, 115043767,920350135,7362801079,58902408631, 471219269047,3769754152375,30158033218999, 241264265751991,1930114126015927, 15440913008127415,123527304065019319, 988218432520154551,7905747460161236407] |