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 | 1 |
| 2 | 6 |
| 3 | 15 |
| 4 | 18 |
| 5 | 19 |
| 6 | 20 |
| 7 | 22 |
| 8 | 24 |
| 9 | 28 |
| 10 | 34 |
| 11 | 36 |
| 12 | 42 |
| 13 | 48 |
| 14 | 52 |
| 15 | 54 |
| 16 | 76 |
| 17 | 78 |
| 18 | 84 |
| 19 | 90 |
| 20 | 98 |
| 21 | 140 |
| 22 | 171 |
| 23 | 260 |
| 24 | 308 |
| 25 | 336 |
| 26 | 496 |
| 27 | 8128 |
| 28 | 33550336 |
| 29 | 8589869056 |