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 | 7 |
| 1 | 43 |
| 2 | 195 |
| 3 | 811 |
| 4 | 3283 |
| 5 | 13179 |
| 6 | 52771 |
| 7 | 211147 |
| 8 | 844659 |
| 9 | 3378715 |
| 10 | 13514947 |
| 11 | 54059883 |
| 12 | 216239635 |
| 13 | 864958651 |
| 14 | 3459834723 |
| 15 | 13839339019 |
| 16 | 55357356211 |
| 17 | 221429424987 |
| 18 | 885717700099 |
| 19 | 3542870800555 |
| 20 | 14171483202387 |
| 21 | 56685932809723 |
| 22 | 226743731239075 |
| 23 | 906974924956491 |
| 24 | 3627899699826163 |