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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 12 |
| 3 | 20 |
| 4 | 36 |
| 5 | 55 |
| 6 | 75 |
| 7 | 106 |
| 8 | 138 |
| 9 | 176 |
| 10 | 219 |
| 11 | 265 |
| 12 | 327 |
| 13 | 381 |
| 14 | 435 |
| 15 | 498 |
| 16 | 564 |
| 17 | 648 |
| 18 | 734 |
| 19 | 810 |
| 20 | 895 |
| 21 | 1005 |
| 22 | 1108 |
| 23 | 1184 |
| 24 | 1271 |
| 25 | 1399 |
| 26 | 1557 |
| 27 | 1653 |
| 28 | 1753 |
| 29 | 1882 |
| 30 | 2068 |
| 31 | 2199 |
| 32 | 2308 |
| 33 | 2446 |
| 34 | 2598 |
| 35 | 2757 |
| 36 | 2928 |
| 37 | 3097 |
| 38 | 3254 |
| 39 | 3454 |
| 40 | 3656 |
| 41 | 3838 |
| 42 | 3959 |
| 43 | 4150 |
| 44 | 4363 |
| 45 | 4596 |
| 46 | 4795 |
[1,4,12,20,36,55,75,106,138,176,219,265,327,381, 435,498,564,648,734,810,895,1005,1108,1184,1271, 1399,1557,1653,1753,1882,2068,2199,2308,2446,2598, 2757,2928,3097,3254,3454,3656,3838,3959,4150,4363, 4596,4795] |