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) |
|---|---|
| 1 | 55 |
| 2 | 301 |
| 3 | 3631 |
| 4 | 6085 |
| 5 | 19495 |
| 6 | 70645 |
| 7 | 147853 |
| 8 | 438205 |
| 9 | 605695 |
| 10 | 669781 |
| 11 | 888823 |
| 12 | 1694695 |
| 13 | 3060301 |
| 14 | 3640783 |
| 15 | 6692791 |
| 16 | 7998895 |
| 17 | 9857245 |
| 18 | 12912535 |
| 19 | 15443365 |
| 20 | 17109895 |
| 21 | 17690941 |
| 22 | 22819693 |
| 23 | 28048231 |
| 24 | 34936663 |
| 25 | 58178245 |
| 26 | 75203725 |
| 27 | 95263573 |
| 28 | 124984543 |
| 29 | 127160245 |
| 30 | 155267965 |