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 | 153 |
| 3 | 1153 |
| 4 | 1183 |
| 5 | 3465 |
| 6 | 7673 |
| 7 | 7673 |
| 8 | 7673 |
| 9 | 65913 |
| 10 | 65913 |
| 11 | 65913 |
| 12 | 76923 |
| 13 | 232767 |
| 14 | 232767 |
| 15 | 232767 |
| 16 | 232767 |
| 17 | 232767 |
| 18 | 2307767 |
| 19 | 2307767 |
| 20 | 2307767 |
| 21 | 2307767 |
| 22 | 3076923 |
| 23 | 6923313 |
| 24 | 17078903 |
| 25 | 19507893 |
| 26 | 56695913 |
| 27 | 56695913 |
| 28 | 113322666 |
| 29 | 113322666 |