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 | 25 |
| 1 | 26 |
| 2 | 129 |
| 3 | 671 |
| 4 | 800 |
| 5 | 1471 |
| 6 | 9626 |
| 7 | 11097 |
| 8 | 54014 |
| 9 | 65111 |
| 10 | 444680 |
| 11 | 509791 |
| 12 | 954471 |
| 13 | 5282146 |
| 14 | 22083055 |
| 15 | 27365201 |
| 16 | 1390343105 |
| 17 | 1417708306 |
| 18 | 7061176329 |
| 19 | 36723589951 |
| 20 | 43784766280 |
| 21 | 80508356231 |
| 22 | 526834903666 |