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 | 23 |
| 2 | 27 |
| 3 | 89 |
| 4 | 137 |
| 5 | 9190 |
| 6 | 25731 |
| 7 | 80457 |
| 8 | 125859 |
| 9 | 270815 |
| 10 | 609977 |
| 11 | 959612 |
| 12 | 1034186 |
| 13 | 1491489 |
| 14 | 2975032 |
| 15 | 264484387 |
| 16 | 1092196976 |
| 17 | 1194228023 |
| 18 | 1424193547 |
| 19 | 4523998315 |
| 20 | 13583506006 |
| 21 | 380693793416 |
| 22 | 1097951708621 |
| 23 | 1486580651232 |