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| n | a(n) |
|---|---|
| 2 | 5 |
| 3 | 37 |
| 4 | 145 |
| 5 | 471 |
| 6 | 901 |
| 7 | 2185 |
| 8 | 3969 |
| 9 | 5563 |
| 10 | 11141 |
| 11 | 17293 |
| 12 | 21913 |
| 13 | 36479 |
| 14 | 50485 |
| 15 | 51661 |
| 16 | 90753 |
| 17 | 118355 |
| 18 | 139861 |
| 19 | 191445 |
| 20 | 238481 |
[5,37,145,471,901,2185,3969,5563,11141,17293, 21913,36479,50485,51661,90753,118355,139861, 191445,238481] |