This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 6 |
| 3 | 19 |
| 4 | 44 |
| 5 | 85 |
| 6 | 146 |
| 7 | 231 |
| 8 | 344 |
| 9 | 489 |
| 10 | 670 |
| 11 | 891 |
| 12 | 1156 |
| 13 | 1469 |
| 14 | 1834 |
| 15 | 2255 |
| 16 | 2736 |
| 17 | 3281 |
| 18 | 3894 |
| 19 | 4579 |
| 20 | 5340 |
| 21 | 6181 |
| 22 | 7106 |
| 23 | 8119 |
| 24 | 9224 |
| 25 | 10425 |
| 26 | 11726 |
| 27 | 13131 |
| 28 | 14644 |
| 29 | 16269 |
| 30 | 18010 |
| 31 | 19871 |
| 32 | 21856 |
| 33 | 23969 |
| 34 | 26214 |
| 35 | 28595 |
| 36 | 31116 |
| 37 | 33781 |
| 38 | 36594 |
| 39 | 39559 |
| 40 | 42680 |