n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 55 |
3 | 481 |
4 | 4645 |
5 | 49171 |
6 | 566827 |
7 | 7073725 |
8 | 95064361 |
9 | 1369375615 |
10 | 21054430591 |
11 | 344231563897 |
12 | 5964569413645 |
13 | 109196040092491 |
14 | 2106381399472435 |
15 | 42705264827626261 |
16 | 907920105215691217 |
17 | 20198878182718877815 |
[1,7,55,481,4645,49171,566827,7073725,95064361, 1369375615,21054430591,344231563897,5964569413645, 109196040092491,2106381399472435, 42705264827626261,907920105215691217, 20198878182718877815] |