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| n | a(n) |
|---|---|
| 0 | 19 |
| 1 | 20 |
| 2 | 119 |
| 3 | 139 |
| 4 | 258 |
| 5 | 397 |
| 6 | 1449 |
| 7 | 1846 |
| 8 | 6987 |
| 9 | 36781 |
| 10 | 80549 |
| 11 | 197879 |
| 12 | 1069944 |
| 13 | 3407711 |
| 14 | 4477655 |
| 15 | 16840676 |
| 16 | 21318331 |
| 17 | 38159007 |
| 18 | 59477338 |
| 19 | 335545697 |
| 20 | 395023035 |
| 21 | 15346421027 |
| 22 | 15741444062 |
| 23 | 94053641337 |
[19,20,119,139,258,397,1449,1846,6987,36781,80549, 197879,1069944,3407711,4477655,16840676,21318331, 38159007,59477338,335545697,395023035,15346421027, 15741444062,94053641337] |