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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 147 |
| 3 | 711 |
| 4 | 2567 |
| 5 | 7586 |
| 6 | 19374 |
| 7 | 44274 |
| 8 | 92697 |
| 9 | 180829 |
| 10 | 332761 |
| 11 | 583089 |
| 12 | 980031 |
| 13 | 1589108 |
| 14 | 2497436 |
| 15 | 3818676 |
| 16 | 5698689 |
| 17 | 8321943 |
| 18 | 11918719 |
| 19 | 16773163 |
| 20 | 23232231 |
| 21 | 31715574 |
| 22 | 42726410 |
| 23 | 56863430 |
| 24 | 74833785 |
| 25 | 97467201 |
| 26 | 125731269 |
| 27 | 160747957 |
[19,147,711,2567,7586,19374,44274,92697,180829, 332761,583089,980031,1589108,2497436,3818676, 5698689,8321943,11918719,16773163,23232231, 31715574,42726410,56863430,74833785,97467201, 125731269,160747957] |