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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 89 |
| 3 | 28729 |
| 4 | 130681 |
| 5 | 1875529 |
| 6 | 3420649 |
| 7 | 7893289 |
| 8 | 112561489 |
| 9 | 373320361 |
| 10 | 777824209 |
| 11 | 1506177289 |
| 12 | 3262865761 |
| 13 | 4362536449 |
| 14 | 5887416169 |
| 15 | 8882968249 |
| 16 | 9355048561 |
| 17 | 18141261409 |
| 18 | 21517809409 |
| 19 | 22898196361 |
| 20 | 27983100241 |
| 21 | 35152312609 |
| 22 | 62001747001 |
| 23 | 67123223641 |
| 24 | 85662460441 |
| 25 | 89526324889 |
| 26 | 100469663929 |
[19,89,28729,130681,1875529,3420649,7893289, 112561489,373320361,777824209,1506177289, 3262865761,4362536449,5887416169,8882968249, 9355048561,18141261409,21517809409,22898196361, 27983100241,35152312609,62001747001,67123223641, 85662460441,89526324889,100469663929] |