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 | 1 |
| 2 | 4 |
| 3 | 11 |
| 4 | 25 |
| 5 | 51 |
| 6 | 98 |
| 7 | 182 |
| 8 | 331 |
| 9 | 595 |
| 10 | 1063 |
| 11 | 1894 |
| 12 | 3373 |
| 13 | 6010 |
| 14 | 10719 |
| 15 | 19139 |
| 16 | 34208 |
| 17 | 61195 |
| 18 | 109551 |
| 19 | 196228 |
| 20 | 351636 |
| 21 | 630330 |
| 22 | 1130181 |
| 23 | 2026775 |
| 24 | 3635128 |
| 25 | 6520408 |
| 26 | 11696591 |
| 27 | 20982875 |
| 28 | 37643135 |
| 29 | 67533204 |