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 | 3 |
| 1 | 31 |
| 2 | 159 |
| 3 | 355 |
| 4 | 169 |
| 5 | 314159 |
| 6 | 392705 |
| 7 | 10166 |
| 8 | 7998 |
| 9 | 9787003 |
| 10 | 28954814 |
| 11 | 157079632681 |
| 12 | 68250087 |
| 13 | 4349287 |
| 14 | 67757089 |
| 15 | 1002742628275 |
| 16 | 1230791 |
| 17 | 1307585156 |
| 18 | 14846149 |
| 19 | 1296188 |
| 20 | 1024025943 |
| 21 | 452477425 |
| 22 | 1492388104 |
| 23 | 381315143079141 |
| 24 | 989849547461 |
| 25 | 841346597336054869 |