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 | 7 |
| 3 | 13 |
| 4 | 71 |
| 5 | 103 |
| 6 | 541 |
| 7 | 1091 |
| 8 | 1367 |
| 9 | 1627 |
| 10 | 4177 |
| 11 | 9011 |
| 12 | 9551 |
| 13 | 36913 |
| 14 | 43063 |
| 15 | 49681 |
| 16 | 57917 |
| 17 | 483611 |
| 18 | 877843 |
| 19 | 2215303 |
| 20 | 2704981 |
| 21 | 3598867 |
| 22 | 7973131 |
| 23 | 8530117 |