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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 7 |
| 3 | 12 |
| 4 | 15 |
| 5 | 37 |
| 6 | 73 |
| 7 | 31 |
| 8 | 103 |
| 9 | 146 |
| 10 | 319 |
| 11 | 731 |
| 12 | 63 |
| 13 | 271 |
| 14 | 505 |
| 15 | 1191 |
| 16 | 1833 |
| 17 | 4618 |
[3,7,12,15,37,73,31,103,146,319,731,63,271,505, 1191,1833,4618] |