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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 4 |
| 3 | 10 |
| 4 | 18 |
| 5 | 27 |
| 6 | 38 |
| 7 | 50 |
| 8 | 62 |
| 9 | 75 |
| 10 | 90 |
| 11 | 104 |
| 12 | 121 |
| 13 | 138 |
| 14 | 154 |
| 15 | 172 |
| 16 | 191 |
| 17 | 209 |
| 18 | 229 |
| 19 | 251 |
| 20 | 271 |
| 21 | 292 |
| 22 | 317 |
| 23 | 339 |
| 24 | 362 |
| 25 | 386 |
| 26 | 410 |
| 27 | 435 |
| 28 | 459 |
| 29 | 484 |
| 30 | 512 |
| 31 | 538 |
| 32 | 565 |
| 33 | 591 |
| 34 | 621 |
| 35 | 650 |
| 36 | 680 |
| 37 | 709 |
| 38 | 737 |
| 39 | 767 |
| 40 | 799 |
| 41 | 829 |
| 42 | 860 |
| 43 | 890 |
| 44 | 922 |
| 45 | 955 |
| 46 | 987 |
| 47 | 1021 |
| 48 | 1053 |
| 49 | 1087 |
| 50 | 1122 |
| 51 | 1157 |
| 52 | 1194 |
| 53 | 1228 |
| 54 | 1263 |
[0,4,10,18,27,38,50,62,75,90,104,121,138,154,172, 191,209,229,251,271,292,317,339,362,386,410,435, 459,484,512,538,565,591,621,650,680,709,737,767, 799,829,860,890,922,955,987,1021,1053,1087,1122, 1157,1194,1228,1263] |