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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 9 |
| 3 | 19 |
| 4 | 36 |
| 5 | 56 |
| 6 | 76 |
| 7 | 106 |
| 8 | 142 |
| 9 | 172 |
| 10 | 217 |
| 11 | 265 |
| 12 | 306 |
| 13 | 367 |
| 14 | 426 |
| 15 | 480 |
| 16 | 554 |
| 17 | 626 |
| 18 | 690 |
| 19 | 779 |
| 20 | 868 |
| 21 | 940 |
| 22 | 1046 |
| 23 | 1146 |
| 24 | 1227 |
| 25 | 1352 |
| 26 | 1462 |
| 27 | 1554 |
| 28 | 1695 |
| 29 | 1818 |
| 30 | 1918 |
| 31 | 2075 |
| 32 | 2215 |
| 33 | 2321 |
| 34 | 2497 |
| 35 | 2650 |
| 36 | 2762 |
| 37 | 2958 |
| 38 | 3121 |
| 39 | 3242 |
| 40 | 3457 |
| 41 | 3632 |
| 42 | 3760 |
| 43 | 3993 |
| 44 | 4184 |
| 45 | 4317 |
| 46 | 4570 |
| 47 | 4774 |
[1,4,9,19,36,56,76,106,142,172,217,265,306,367, 426,480,554,626,690,779,868,940,1046,1146,1227, 1352,1462,1554,1695,1818,1918,2075,2215,2321,2497, 2650,2762,2958,3121,3242,3457,3632,3760,3993,4184, 4317,4570,4774] |