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| n | a(n) |
|---|---|
| 1 | 18 |
| 2 | 29 |
| 3 | 47 |
| 4 | 76 |
| 5 | 1364 |
| 6 | 271443 |
| 7 | 710647 |
| 8 | 12752043 |
| 9 | 20633239 |
| 10 | 33385282 |
| 11 | 54018521 |
| 12 | 2537720636 |
| 13 | 62113250390418 |
| 14 | 1803423556807921 |
| 15 | 221806434537978679 |
| 16 | 667714778405043259651218 |
| 17 | 31368381450514812615027603 |
[18,29,47,76,1364,271443,710647,12752043,20633239, 33385282,54018521,2537720636,62113250390418, 1803423556807921,221806434537978679, 667714778405043259651218, 31368381450514812615027603] |