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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 7 |
| 4 | 11 |
| 5 | 16 |
| 6 | 22 |
| 7 | 35 |
| 8 | 45 |
| 9 | 60 |
| 10 | 74 |
| 11 | 91 |
| 12 | 107 |
| 13 | 124 |
| 14 | 142 |
| 15 | 161 |
| 16 | 179 |
| 17 | 204 |
| 18 | 228 |
| 19 | 255 |
| 20 | 277 |
| 21 | 306 |
| 22 | 332 |
| 23 | 363 |
| 24 | 389 |
| 25 | 418 |
| 26 | 450 |
| 27 | 493 |
| 28 | 529 |
| 29 | 562 |
| 30 | 600 |
| 31 | 635 |
| 32 | 671 |
| 33 | 712 |
| 34 | 754 |
| 35 | 799 |
| 36 | 839 |
| 37 | 890 |
| 38 | 940 |
[0,1,4,7,11,16,22,35,45,60,74,91,107,124,142,161, 179,204,228,255,277,306,332,363,389,418,450,493, 529,562,600,635,671,712,754,799,839,890,940] |