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| n | a(n) |
|---|---|
| 1 | 684 |
| 2 | 738 |
| 3 | 1197 |
| 4 | 1962 |
| 5 | 3582 |
| 6 | 6795 |
| 7 | 12762 |
| 8 | 24552 |
| 9 | 47367 |
| 10 | 91440 |
| 11 | 176940 |
| 12 | 342711 |
| 13 | 663624 |
| 14 | 1285704 |
| 15 | 2490993 |
| 16 | 4826304 |
| 17 | 9351324 |
| 18 | 18119295 |
| 19 | 35108028 |
| 20 | 68026230 |
| 21 | 131809365 |
| 22 | 255397428 |
| 23 | 494865270 |
| 24 | 958865463 |
| 25 | 1857925458 |
| 26 | 3599971020 |
[684,738,1197,1962,3582,6795,12762,24552,47367, 91440,176940,342711,663624,1285704,2490993, 4826304,9351324,18119295,35108028,68026230, 131809365,255397428,494865270,958865463, 1857925458,3599971020] |