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| n | a(n) |
|---|---|
| 1 | 478 |
| 2 | 930 |
| 3 | 1758 |
| 4 | 3558 |
| 5 | 7046 |
| 6 | 14702 |
| 7 | 29970 |
| 8 | 63862 |
| 9 | 132746 |
| 10 | 287122 |
| 11 | 605338 |
| 12 | 1324402 |
| 13 | 2823950 |
| 14 | 6237794 |
| 15 | 13432462 |
| 16 | 29925830 |
| 17 | 65041174 |
| 18 | 146070222 |
| 19 | 320349666 |
| 20 | 724993878 |
| 21 | 1604290682 |
| 22 | 3657668498 |
| 23 | 8165829930 |
| 24 | 18749536114 |
| 25 | 42223278878 |
[478,930,1758,3558,7046,14702,29970,63862,132746, 287122,605338,1324402,2823950,6237794,13432462, 29925830,65041174,146070222,320349666,724993878, 1604290682,3657668498,8165829930,18749536114, 42223278878] |