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) |
|---|---|
| 0 | 1 |
| 1 | 14 |
| 2 | 141 |
| 3 | 1414 |
| 4 | 14142 |
| 5 | 141421 |
| 6 | 1414214 |
| 7 | 14142136 |
| 8 | 141421356 |
| 9 | 1414213562 |
| 10 | 14142135624 |
| 11 | 141421356237 |
| 12 | 1414213562373 |
| 13 | 14142135623731 |
| 14 | 141421356237310 |
| 15 | 1414213562373095 |
| 16 | 14142135623730950 |
| 17 | 141421356237309505 |
| 18 | 1414213562373095049 |
| 19 | 14142135623730950488 |
| 20 | 141421356237309504880 |