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 | 1 |
| 1 | 26 |
| 2 | 76 |
| 3 | 176 |
| 4 | 472 |
| 5 | 1256 |
| 6 | 3442 |
| 7 | 9518 |
| 8 | 26608 |
| 9 | 74912 |
| 10 | 212206 |
| 11 | 604058 |
| 12 | 1726582 |
| 13 | 4952246 |
| 14 | 14246644 |
| 15 | 41090936 |
| 16 | 118785568 |
| 17 | 344073056 |
| 18 | 998415598 |
| 19 | 2901784298 |
| 20 | 8445850762 |
| 21 | 24614293082 |
| 22 | 71820129424 |
| 23 | 209785569908 |
| 24 | 613390314046 |