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| n | a(n) |
|---|---|
| 1 | 74 |
| 2 | 682 |
| 3 | 2978 |
| 4 | 17794 |
| 5 | 90054 |
| 6 | 539962 |
| 7 | 2915982 |
| 8 | 17129792 |
| 9 | 95854320 |
| 10 | 556779864 |
| 11 | 3165362160 |
| 12 | 18297969958 |
| 13 | 104743900094 |
| 14 | 604164804194 |
| 15 | 3469208600426 |
| 16 | 19989944278608 |
| 17 | 114949082280552 |
| 18 | 662041931628544 |
| 19 | 3809464845425408 |
[74,682,2978,17794,90054,539962,2915982,17129792, 95854320,556779864,3165362160,18297969958, 104743900094,604164804194,3469208600426, 19989944278608,114949082280552,662041931628544, 3809464845425408] |