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 | 1 |
| 1 | 11 |
| 2 | 62 |
| 3 | 242 |
| 4 | 743 |
| 5 | 1925 |
| 6 | 4396 |
| 7 | 9108 |
| 8 | 17469 |
| 9 | 31471 |
| 10 | 53834 |
| 11 | 88166 |
| 12 | 139139 |
| 13 | 212681 |
| 14 | 316184 |
| 15 | 458728 |
| 16 | 651321 |
| 17 | 907155 |
| 18 | 1241878 |
| 19 | 1673882 |
| 20 | 2224607 |
| 21 | 2918861 |
| 22 | 3785156 |
| 23 | 4856060 |
| 24 | 6168565 |
| 25 | 7764471 |
| 26 | 9690786 |
| 27 | 12000142 |
| 28 | 14751227 |
| 29 | 18009233 |
| 30 | 21846320 |