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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 9 |
| 6 | 15 |
| 7 | 18 |
| 8 | 27 |
| 9 | 52 |
| 10 | 72 |
| 11 | 261 |
| 12 | 360 |
| 13 | 400 |
| 14 | 3932 |
| 15 | 4418 |
| 16 | 7046 |
| 17 | 7938 |
| 18 | 8888 |
| 19 | 9162 |
| 20 | 9363 |
| 21 | 9606 |
| 22 | 9738 |
| 23 | 10083 |
| 24 | 10809 |
| 25 | 11970 |
| 26 | 13958 |
| 27 | 23571 |
| 28 | 28384 |
| 29 | 42159 |
| 30 | 51515 |
[1,2,3,7,9,15,18,27,52,72,261,360,400,3932,4418, 7046,7938,8888,9162,9363,9606,9738,10083,10809, 11970,13958,23571,28384,42159,51515] |