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 | 251 |
| 2 | 521 |
| 3 | 11251 |
| 4 | 12511 |
| 5 | 15121 |
| 6 | 25111 |
| 7 | 111521 |
| 8 | 115211 |
| 9 | 121151 |
| 10 | 151121 |
| 11 | 152111 |
| 12 | 211151 |
| 13 | 511211 |
| 14 | 11152111 |
| 15 | 11511211 |
| 16 | 12111511 |
| 17 | 15111211 |
| 18 | 15121111 |
| 19 | 51111211 |
| 20 | 111121151 |
| 21 | 111512111 |
| 22 | 112111511 |
| 23 | 112151111 |
| 24 | 112511111 |
| 25 | 115211111 |
| 26 | 121511111 |
| 27 | 151211111 |