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 | 4 |
| 2 | 444 |
| 3 | 1332 |
| 4 | 4221 |
| 5 | 11111 |
| 6 | 22131 |
| 7 | 23404 |
| 8 | 30031 |
| 9 | 42241 |
| 10 | 112443 |
| 11 | 133321 |
| 12 | 134421 |
| 13 | 140122 |
| 14 | 140411 |
| 15 | 202401 |
| 16 | 214244 |
| 17 | 222223 |
| 18 | 224104 |
| 19 | 241121 |
| 20 | 304011 |
| 21 | 323131 |
| 22 | 331401 |
| 23 | 402201 |
| 24 | 404041 |
| 25 | 411313 |
| 26 | 421411 |
| 27 | 434411 |
| 28 | 1001001 |
| 29 | 1001331 |
| 30 | 1010142 |
| 31 | 1032032 |
| 32 | 1140421 |
| 33 | 1212131 |
| 34 | 1224103 |
| 35 | 1233321 |
| 36 | 1302302 |
| 37 | 1302401 |
| 38 | 1414331 |
| 39 | 1421124 |
| 40 | 1440143 |