| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 15 |
| 5 | 22 |
| 6 | 30 |
| 7 | 40 |
| 8 | 51 |
| 9 | 63 |
| 10 | 76 |
| 11 | 90 |
| 12 | 106 |
| 13 | 123 |
| 14 | 141 |
| 15 | 160 |
| 16 | 180 |
| 17 | 201 |
| 18 | 224 |
| 19 | 248 |
| 20 | 273 |
| 21 | 299 |
| 22 | 326 |
| 23 | 354 |
| 24 | 383 |
| 25 | 414 |
| 26 | 446 |
| 27 | 479 |
| 28 | 513 |
| 29 | 548 |
| 30 | 584 |
| 31 | 621 |
| 32 | 659 |
| 33 | 698 |
| 34 | 739 |
| 35 | 781 |
| 36 | 824 |
| 37 | 868 |
| 38 | 913 |
| 39 | 959 |
| 40 | 1006 |
| 41 | 1054 |
| 42 | 1103 |
| 43 | 1153 |
| 44 | 1205 |
| 45 | 1258 |
| 46 | 1312 |
| 47 | 1367 |
| 48 | 1423 |
| 49 | 1480 |
| 50 | 1538 |
| 51 | 1597 |
| 52 | 1657 |
| 53 | 1718 |
[1,4,9,15,22,30,40,51,63,76,90,106,123,141,160, 180,201,224,248,273,299,326,354,383,414,446,479, 513,548,584,621,659,698,739,781,824,868,913,959, 1006,1054,1103,1153,1205,1258,1312,1367,1423,1480, 1538,1597,1657,1718] |