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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 12 |
| 3 | 37 |
| 4 | 86 |
| 5 | 185 |
| 6 | 328 |
| 7 | 549 |
| 8 | 834 |
| 9 | 1225 |
| 10 | 1776 |
| 11 | 2427 |
| 12 | 3278 |
| 13 | 4303 |
| 14 | 5464 |
| 15 | 6827 |
| 16 | 8470 |
| 17 | 10417 |
| 18 | 12552 |
| 19 | 15031 |
| 20 | 17800 |
| 21 | 20793 |
| 22 | 24190 |
| 23 | 27925 |
| 24 | 32108 |
| 25 | 36861 |
| 26 | 42012 |
| 27 | 47471 |
| 28 | 53356 |
| 29 | 59569 |
| 30 | 66236 |
| 31 | 73983 |
| 32 | 82236 |
| 33 | 91141 |
| 34 | 100454 |
| 35 | 110735 |
| 36 | 121456 |
| 37 | 132917 |
[3,12,37,86,185,328,549,834,1225,1776,2427,3278, 4303,5464,6827,8470,10417,12552,15031,17800,20793, 24190,27925,32108,36861,42012,47471,53356,59569, 66236,73983,82236,91141,100454,110735,121456, 132917] |