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 | 1 |
| 2 | 3 |
| 3 | 11 |
| 4 | 17 |
| 5 | 53 |
| 6 | 161 |
| 7 | 285 |
| 8 | 569 |
| 9 | 1459 |
| 10 | 4699 |
| 11 | 7177 |
| 12 | 15631 |
| 13 | 28229 |
| 14 | 66883 |
| 15 | 211311 |
| 16 | 319929 |
| 17 | 627705 |
| 18 | 1163049 |
| 19 | 2150209 |
| 20 | 4422225 |
| 21 | 14320583 |
| 22 | 20392019 |
| 23 | 39962165 |
| 24 | 68618087 |
| 25 | 126643545 |
| 26 | 212615483 |
| 27 | 433704811 |
| 28 | 1312156393 |
| 29 | 1864959757 |
| 30 | 3502343041 |
| 31 | 5919183485 |
| 32 | 10364053441 |