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 | 11 |
| 2 | 56 |
| 3 | 155 |
| 4 | 361 |
| 5 | 782 |
| 6 | 1601 |
| 7 | 3141 |
| 8 | 5907 |
| 9 | 10678 |
| 10 | 18618 |
| 11 | 31422 |
| 12 | 51505 |
| 13 | 82243 |
| 14 | 128276 |
| 15 | 195884 |
| 16 | 293448 |
| 17 | 432009 |
| 18 | 625939 |
| 19 | 893739 |
| 20 | 1258980 |
| 21 | 1751404 |
| 22 | 2408203 |
| 23 | 3275495 |
| 24 | 4410017 |
| 25 | 5881056 |
| 26 | 7772640 |
| 27 | 10186012 |
| 28 | 13242411 |
| 29 | 17086185 |
| 30 | 21888262 |
| 31 | 27850006 |