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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 17 |
| 3 | 37 |
| 4 | 151 |
| 5 | 607 |
| 6 | 1217 |
| 7 | 2437 |
| 8 | 4877 |
| 9 | 39019 |
| 10 | 78041 |
| 11 | 624331 |
| 12 | 6243313 |
| 13 | 174812767 |
| 14 | 1398502139 |
| 15 | 19579029949 |
| 16 | 39158059901 |
| 17 | 1957902995053 |
| 18 | 15663223960427 |
| 19 | 156632239604273 |
| 20 | 3132644792085463 |
| 21 | 181693397940956857 |
| 22 | 726773591763827431 |
| 23 | 7267735917638274313 |
| 24 | 1148302274986847341457 |
| 25 | 4593209099947389365831 |
[7,17,37,151,607,1217,2437,4877,39019,78041, 624331,6243313,174812767,1398502139,19579029949, 39158059901,1957902995053,15663223960427, 156632239604273,3132644792085463, 181693397940956857,726773591763827431, 7267735917638274313,1148302274986847341457, 4593209099947389365831] |