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| n | a(n) |
|---|---|
| 1 | 140 |
| 2 | 545 |
| 3 | 2174 |
| 4 | 9113 |
| 5 | 43295 |
| 6 | 212747 |
| 7 | 1096781 |
| 8 | 6045233 |
| 9 | 33958643 |
| 10 | 194694395 |
| 11 | 1141026791 |
| 12 | 6726497945 |
| 13 | 39885267065 |
| 14 | 237890735825 |
| 15 | 1421015749799 |
| 16 | 8500910306963 |
| 17 | 50929911923495 |
| 18 | 305241246279617 |
| 19 | 1830098075374121 |
[140,545,2174,9113,43295,212747,1096781,6045233, 33958643,194694395,1141026791,6726497945, 39885267065,237890735825,1421015749799, 8500910306963,50929911923495,305241246279617, 1830098075374121] |