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 | 3 |
| 2 | 35 |
| 3 | 357 |
| 4 | 35711 |
| 5 | 3571113 |
| 6 | 357111317 |
| 7 | 35711131719 |
| 8 | 3571113171929 |
| 9 | 357111317192931 |
| 10 | 35711131719293141 |
| 11 | 3571113171929314143 |
| 12 | 357111317192931414359 |
| 13 | 35711131719293141435961 |
| 14 | 3571113171929314143596171 |
| 15 | 357111317192931414359617173 |
| 16 | 357111317192931414359617173101 |