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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 9 |
| 3 | 17 |
| 4 | 30 |
| 5 | 50 |
| 6 | 74 |
| 7 | 97 |
| 8 | 123 |
| 9 | 158 |
| 10 | 198 |
| 11 | 237 |
| 12 | 281 |
| 13 | 336 |
| 14 | 394 |
| 15 | 447 |
| 16 | 501 |
| 17 | 566 |
| 18 | 638 |
| 19 | 709 |
| 20 | 783 |
| 21 | 868 |
| 22 | 960 |
| 23 | 1047 |
| 24 | 1133 |
| 25 | 1230 |
| 26 | 1334 |
| 27 | 1435 |
| 28 | 1537 |
| 29 | 1650 |
| 30 | 1772 |
| 31 | 1895 |
| 32 | 2019 |
| 33 | 2150 |
| 34 | 2284 |
| 35 | 2413 |
| 36 | 2543 |
| 37 | 2684 |
| 38 | 2836 |
| 39 | 2993 |
| 40 | 3155 |
| 41 | 3322 |
| 42 | 3486 |
| 43 | 3643 |
| 44 | 3801 |
| 45 | 3972 |
| 46 | 4156 |
| 47 | 4345 |
[1,4,9,17,30,50,74,97,123,158,198,237,281,336,394, 447,501,566,638,709,783,868,960,1047,1133,1230, 1334,1435,1537,1650,1772,1895,2019,2150,2284,2413, 2543,2684,2836,2993,3155,3322,3486,3643,3801,3972, 4156,4345] |