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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 7 |
| 7 | 11 |
| 8 | 22 |
| 9 | 23 |
| 10 | 46 |
| 11 | 47 |
| 12 | 94 |
| 13 | 167 |
| 14 | 283 |
| 15 | 359 |
| 16 | 718 |
| 17 | 719 |
| 18 | 1438 |
| 19 | 1439 |
| 20 | 2878 |
| 21 | 2879 |
| 22 | 5758 |
| 23 | 11516 |
| 24 | 23032 |
| 25 | 34549 |
| 26 | 69098 |
| 27 | 138059 |
| 28 | 138197 |
| 29 | 276394 |
| 30 | 552788 |
| 31 | 1105576 |
| 32 | 2211152 |
| 33 | 3316619 |
| 34 | 6633238 |
| 35 | 11792393 |
| 36 | 23584786 |
| 37 | 23584787 |
| 38 | 47169574 |
| 39 | 53065907 |
| 40 | 106131814 |
| 41 | 212263628 |
| 42 | 424527256 |