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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 9 |
| 3 | 18 |
| 4 | 34 |
| 5 | 54 |
| 6 | 84 |
| 7 | 120 |
| 8 | 169 |
| 9 | 225 |
| 10 | 297 |
| 11 | 378 |
| 12 | 478 |
| 13 | 588 |
| 14 | 720 |
| 15 | 864 |
| 16 | 1033 |
| 17 | 1215 |
| 18 | 1425 |
| 19 | 1650 |
| 20 | 1906 |
| 21 | 2178 |
| 22 | 2484 |
| 23 | 2808 |
| 24 | 3169 |
| 25 | 3549 |
| 26 | 3969 |
| 27 | 4410 |
| 28 | 4894 |
| 29 | 5400 |
| 30 | 5952 |
| 31 | 6528 |
| 32 | 7153 |
| 33 | 7803 |
| 34 | 8505 |
| 35 | 9234 |
| 36 | 10018 |
| 37 | 10830 |
| 38 | 11700 |
| 39 | 12600 |
| 40 | 13561 |
| 41 | 14553 |
| 42 | 15609 |
| 43 | 16698 |
| 44 | 17854 |
| 45 | 19044 |
[1,3,9,18,34,54,84,120,169,225,297,378,478,588, 720,864,1033,1215,1425,1650,1906,2178,2484,2808, 3169,3549,3969,4410,4894,5400,5952,6528,7153,7803, 8505,9234,10018,10830,11700,12600,13561,14553, 15609,16698,17854,19044] |