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| n | a(n) |
|---|---|
| 1 | 181258 |
| 2 | 552519 |
| 3 | 1972133 |
| 4 | 4445107 |
| 5 | 10864643 |
| 6 | 31214741 |
| 7 | 59472599 |
| 8 | 127396699 |
| 9 | 240776801 |
| 10 | 381348901 |
| 11 | 590182759 |
| 12 | 979749101 |
| 13 | 1625329443 |
| 14 | 2354069543 |
| 15 | 3557186207 |
| 16 | 5132070551 |
| 17 | 6786946651 |
| 18 | 9149078751 |
| 19 | 12243523093 |
| 20 | 16477457435 |
[181258,552519,1972133,4445107,10864643,31214741, 59472599,127396699,240776801,381348901,590182759, 979749101,1625329443,2354069543,3557186207, 5132070551,6786946651,9149078751,12243523093, 16477457435] |