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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 5 |
| 4 | 6 |
| 5 | 9 |
| 6 | 29 |
| 7 | 47 |
| 8 | 54 |
| 9 | 100 |
| 10 | 144 |
| 11 | 167 |
| 12 | 304 |
| 13 | 387 |
| 14 | 407 |
| 15 | 1137 |
| 16 | 1374 |
| 17 | 3337 |
| 18 | 3909 |
| 19 | 4845 |
| 20 | 6076 |
| 21 | 12876 |
| 22 | 17790 |
| 23 | 20038 |
| 24 | 30180 |
| 25 | 30349 |
| 26 | 37171 |
[1,4,5,6,9,29,47,54,100,144,167,304,387,407,1137, 1374,3337,3909,4845,6076,12876,17790,20038,30180, 30349,37171] |