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 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 6 |
| 7 | 12 |
| 8 | 13 |
| 9 | 24 |
| 10 | 33 |
| 11 | 60 |
| 12 | 61 |
| 13 | 142 |
| 14 | 143 |
| 15 | 289 |
| 16 | 447 |
| 17 | 699 |
| 18 | 700 |
| 19 | 1558 |
| 20 | 1559 |
| 21 | 3518 |
| 22 | 5375 |
| 23 | 8977 |
| 24 | 8978 |
| 25 | 17179 |
| 26 | 20305 |
| 27 | 40471 |
| 28 | 54808 |
| 29 | 98182 |
| 30 | 98183 |
| 31 | 242068 |
| 32 | 242069 |
| 33 | 477002 |
| 34 | 695051 |
| 35 | 1183654 |
| 36 | 1510612 |
| 37 | 2629806 |
| 38 | 2629807 |
| 39 | 5057173 |
| 40 | 7928654 |
| 41 | 12366025 |
| 42 | 12366026 |