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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 29 |
| 3 | 155 |
| 4 | 929 |
| 5 | 3872 |
| 6 | 33612 |
| 7 | 155007 |
| 8 | 1527917 |
| 9 | 7425257 |
| 10 | 76107600 |
| 11 | 378550019 |
| 12 | 3933127974 |
| 13 | 19744487344 |
| 14 | 206465432944 |
| 15 | 1041725895360 |
| 16 | 10935740517085 |
| 17 | 55369736772216 |
| 18 | 582894049028262 |
| 19 | 2959494049295828 |
| 20 | 31224847681516989 |
[16,29,155,929,3872,33612,155007,1527917,7425257, 76107600,378550019,3933127974,19744487344, 206465432944,1041725895360,10935740517085, 55369736772216,582894049028262,2959494049295828, 31224847681516989] |