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 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 9 |
| 8 | 21 |
| 9 | 41 |
| 10 | 71 |
| 11 | 113 |
| 12 | 173 |
| 13 | 269 |
| 14 | 443 |
| 15 | 777 |
| 16 | 1413 |
| 17 | 2577 |
| 18 | 4615 |
| 19 | 8065 |
| 20 | 13813 |
| 21 | 23413 |
| 22 | 39691 |
| 23 | 67801 |
| 24 | 116973 |
| 25 | 203337 |
| 26 | 354519 |
| 27 | 617345 |
| 28 | 1071197 |
| 29 | 1851677 |
| 30 | 3192731 |
| 31 | 5501033 |
| 32 | 9485621 |
| 33 | 16381185 |
| 34 | 28330119 |
| 35 | 49035777 |
| 36 | 84883621 |
| 37 | 146875717 |
| 38 | 253983307 |
| 39 | 438968761 |