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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 6 |
| 5 | 7 |
| 6 | 24 |
| 7 | 41 |
| 8 | 96 |
| 9 | 130 |
| 10 | 5219 |
| 11 | 14283 |
| 12 | 20976 |
| 13 | 69719 |
| 14 | 117840 |
| 15 | 296471 |
| 16 | 567967 |
| 17 | 1465252 |
| 18 | 3133740 |
| 19 | 3721743 |
| 20 | 8657497 |
| 21 | 13923785 |
| 22 | 46772045 |
| 23 | 70150066 |
| 24 | 136326924 |
| 25 | 715928069 |
| 26 | 1642323045 |