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 | 2 |
| 3 | 7 |
| 4 | 77 |
| 5 | 141 |
| 6 | 151 |
| 7 | 161 |
| 8 | 242 |
| 9 | 252 |
| 10 | 262 |
| 11 | 777 |
| 12 | 7777 |
| 13 | 14041 |
| 14 | 14141 |
| 15 | 14241 |
| 16 | 15051 |
| 17 | 15151 |
| 18 | 15251 |
| 19 | 16061 |
| 20 | 16161 |
| 21 | 16261 |
| 22 | 24042 |
| 23 | 24142 |
| 24 | 24242 |
| 25 | 25052 |
| 26 | 25152 |
| 27 | 25252 |
| 28 | 26062 |
| 29 | 26162 |
| 30 | 26262 |
| 31 | 77777 |
| 32 | 777777 |
| 33 | 1404041 |
| 34 | 1405041 |
| 35 | 1406041 |
| 36 | 1414141 |
| 37 | 1415141 |