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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 14 |
| 5 | 22 |
| 6 | 115 |
| 7 | 55 |
| 8 | 105 |
| 9 | 155 |
| 10 | 145 |
| 11 | 341 |
| 12 | 501 |
| 13 | 489 |
| 14 | 143 |
| 15 | 437 |
| 16 | 301 |
| 17 | 395 |
| 18 | 665 |
[2,4,6,14,22,115,55,105,155,145,341,501,489,143, 437,301,395,665] |