| n | a(n) |
|---|---|
| 1 | 146861788 |
| 2 | 523487828 |
| 3 | 1908601444 |
| 4 | 7023308036 |
| 5 | 25966120647 |
| 6 | 96239314549 |
| 7 | 357117150362 |
| 8 | 1325550644016 |
| 9 | 4918335298665 |
| 10 | 18232047941771 |
| 11 | 67489103954016 |
| 12 | 249349516426188 |
| 13 | 919083218908202 |
| 14 | 3377977784235134 |
| 15 | 12373106402582424 |
[146861788,523487828,1908601444,7023308036, 25966120647,96239314549,357117150362, 1325550644016,4918335298665,18232047941771, 67489103954016,249349516426188,919083218908202, 3377977784235134,12373106402582424] |