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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 20 |
| 3 | 46 |
| 4 | 104 |
| 5 | 240 |
| 6 | 544 |
| 7 | 1256 |
| 8 | 2848 |
| 9 | 6576 |
| 10 | 14912 |
| 11 | 34432 |
| 12 | 78080 |
| 13 | 180288 |
| 14 | 408832 |
| 15 | 944000 |
| 16 | 2140672 |
| 17 | 4942848 |
| 18 | 11208704 |
| 19 | 25881088 |
| 20 | 58689536 |
| 21 | 135515136 |
| 22 | 307302400 |
| 23 | 709566464 |
| 24 | 1609056256 |
| 25 | 3715338240 |
| 26 | 8425127936 |
| 27 | 19453763584 |
[10,20,46,104,240,544,1256,2848,6576,14912,34432, 78080,180288,408832,944000,2140672,4942848, 11208704,25881088,58689536,135515136,307302400, 709566464,1609056256,3715338240,8425127936, 19453763584] |