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 | 5 |
| 3 | 26 |
| 4 | 36 |
| 5 | 155 |
| 6 | 213 |
| 7 | 906 |
| 8 | 1244 |
| 9 | 5283 |
| 10 | 7253 |
| 11 | 30794 |
| 12 | 42276 |
| 13 | 179483 |
| 14 | 246405 |
| 15 | 1046106 |
| 16 | 1436156 |
| 17 | 6097155 |
| 18 | 8370533 |
| 19 | 35536826 |
| 20 | 48787044 |
| 21 | 207123803 |
| 22 | 284351733 |
| 23 | 1207205994 |
| 24 | 1657323356 |
| 25 | 7036112163 |
| 26 | 9659588405 |
| 27 | 41009466986 |
| 28 | 56300207076 |
| 29 | 239020689755 |
| 30 | 328141654053 |