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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 12 |
| 3 | 21 |
| 4 | 36 |
| 5 | 61 |
| 6 | 90 |
| 7 | 122 |
| 8 | 159 |
| 9 | 196 |
| 10 | 251 |
| 11 | 305 |
| 12 | 360 |
| 13 | 413 |
| 14 | 469 |
| 15 | 561 |
| 16 | 643 |
| 17 | 720 |
| 18 | 803 |
| 19 | 875 |
| 20 | 992 |
| 21 | 1111 |
| 22 | 1202 |
| 23 | 1294 |
| 24 | 1405 |
| 25 | 1550 |
| 26 | 1700 |
| 27 | 1823 |
| 28 | 1920 |
| 29 | 2061 |
| 30 | 2223 |
| 31 | 2400 |
| 32 | 2563 |
| 33 | 2673 |
| 34 | 2847 |
| 35 | 3021 |
| 36 | 3219 |
| 37 | 3428 |
| 38 | 3560 |
| 39 | 3743 |
| 40 | 3947 |
| 41 | 4163 |
| 42 | 4427 |
| 43 | 4571 |
| 44 | 4763 |
| 45 | 4987 |
| 46 | 5231 |
| 47 | 5536 |
[1,4,12,21,36,61,90,122,159,196,251,305,360,413, 469,561,643,720,803,875,992,1111,1202,1294,1405, 1550,1700,1823,1920,2061,2223,2400,2563,2673,2847, 3021,3219,3428,3560,3743,3947,4163,4427,4571,4763, 4987,5231,5536] |