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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 9 |
| 6 | 14 |
| 7 | 18 |
| 8 | 20 |
| 9 | 23 |
| 10 | 24 |
| 11 | 30 |
| 12 | 61 |
| 13 | 150 |
| 14 | 209 |
| 15 | 213 |
| 16 | 226 |
| 17 | 231 |
| 18 | 364 |
| 19 | 455 |
| 20 | 3990 |
| 21 | 15267 |
| 22 | 24289 |
| 23 | 28270 |
| 24 | 94938 |
| 25 | 155496 |
[1,2,4,6,9,14,18,20,23,24,30,61,150,209,213,226, 231,364,455,3990,15267,24289,28270,94938,155496] |