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 | 8 |
| 2 | 113 |
| 3 | 219 |
| 4 | 33215 |
| 5 | 66317 |
| 6 | 99532 |
| 7 | 165849 |
| 8 | 364913 |
| 9 | 630294 |
| 10 | 1725033 |
| 11 | 3085153 |
| 12 | 27235615 |
| 13 | 78256779 |
| 14 | 131002976 |
| 15 | 209259755 |
| 16 | 471265707 |
| 17 | 1151791169 |
| 18 | 2774848045 |
| 19 | 6701487259 |
| 20 | 11439654911 |
| 21 | 574364584667 |
| 22 | 1709690779483 |
| 23 | 2851718461558 |
| 24 | 4561409241041 |
| 25 | 47337186164411 |