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| n | a(n) |
|---|---|
| 0 | 19 |
| 1 | 20 |
| 2 | 39 |
| 3 | 488 |
| 4 | 527 |
| 5 | 1015 |
| 6 | 39097 |
| 7 | 40112 |
| 8 | 79209 |
| 9 | 990620 |
| 10 | 1069829 |
| 11 | 2060449 |
| 12 | 79366891 |
| 13 | 81427340 |
| 14 | 160794231 |
| 15 | 2010958112 |
| 16 | 2171752343 |
| 17 | 4182710455 |
| 18 | 161114749633 |
| 19 | 165297460088 |
| 20 | 326412209721 |
| 21 | 4082243976740 |
| 22 | 4408656186461 |
| 23 | 8490900163201 |
| 24 | 327062862388099 |
[19,20,39,488,527,1015,39097,40112,79209,990620, 1069829,2060449,79366891,81427340,160794231, 2010958112,2171752343,4182710455,161114749633, 165297460088,326412209721,4082243976740, 4408656186461,8490900163201,327062862388099] |