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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 12 |
| 3 | 48 |
| 4 | 147 |
| 5 | 291 |
| 6 | 519 |
| 7 | 879 |
| 8 | 1383 |
| 9 | 2079 |
| 10 | 3039 |
| 11 | 4359 |
| 12 | 5991 |
| 13 | 7983 |
| 14 | 10515 |
| 15 | 13731 |
| 16 | 17571 |
| 17 | 22131 |
| 18 | 27543 |
| 19 | 33951 |
| 20 | 41271 |
| 21 | 49599 |
| 22 | 59355 |
| 23 | 70779 |
| 24 | 83499 |
| 25 | 97611 |
| 26 | 113763 |
| 27 | 132243 |
| 28 | 152619 |
| 29 | 175035 |
| 30 | 199707 |
| 31 | 226827 |
| 32 | 256443 |
| 33 | 288747 |
| 34 | 324603 |
| 35 | 364395 |
| 36 | 407139 |
| 37 | 452979 |
| 38 | 503319 |
[1,12,48,147,291,519,879,1383,2079,3039,4359,5991, 7983,10515,13731,17571,22131,27543,33951,41271, 49599,59355,70779,83499,97611,113763,132243, 152619,175035,199707,226827,256443,288747,324603, 364395,407139,452979,503319] |