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 | 1 |
| 2 | 3 |
| 3 | 21 |
| 4 | 231 |
| 5 | 2211 |
| 6 | 3321 |
| 7 | 21321 |
| 8 | 32131 |
| 9 | 222111 |
| 10 | 232221 |
| 11 | 11132121 |
| 12 | 22221111 |
| 13 | 22321221 |
| 14 | 2222211111 |
| 15 | 2223211221 |
| 16 | 12221332311 |
| 17 | 222222111111 |
| 18 | 222232111221 |
| 19 | 1121113113121 |
| 20 | 1231322213121 |
| 21 | 22222221111111 |
| 22 | 22222321111221 |
| 23 | 2222222211111111 |
| 24 | 2222223211111221 |