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 | 2 |
| 1 | 8 |
| 2 | 30 |
| 3 | 97 |
| 4 | 312 |
| 5 | 991 |
| 6 | 3140 |
| 7 | 9933 |
| 8 | 31414 |
| 9 | 99344 |
| 10 | 314157 |
| 11 | 993457 |
| 12 | 3141591 |
| 13 | 9934586 |
| 14 | 31415925 |
| 15 | 99345881 |
| 16 | 314159263 |
| 17 | 993458825 |
| 18 | 3141592652 |
| 19 | 9934588264 |