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| n | a(n) |
|---|---|
| 0 | 27 |
| 1 | 28 |
| 2 | 55 |
| 3 | 83 |
| 4 | 304 |
| 5 | 387 |
| 6 | 691 |
| 7 | 1769 |
| 8 | 4229 |
| 9 | 5998 |
| 10 | 40217 |
| 11 | 166866 |
| 12 | 207083 |
| 13 | 1616447 |
| 14 | 16371553 |
| 15 | 17988000 |
| 16 | 232227553 |
| 17 | 250215553 |
| 18 | 2734383083 |
| 19 | 19390897134 |
| 20 | 22125280217 |
| 21 | 107892018002 |
| 22 | 669477388229 |
| 23 | 777369406231 |
[27,28,55,83,304,387,691,1769,4229,5998,40217, 166866,207083,1616447,16371553,17988000,232227553, 250215553,2734383083,19390897134,22125280217, 107892018002,669477388229,777369406231] |