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 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 8 |
| 7 | 13 |
| 8 | 19 |
| 9 | 38 |
| 10 | 64 |
| 11 | 128 |
| 12 | 226 |
| 13 | 367 |
| 14 | 734 |
| 15 | 1295 |
| 16 | 2114 |
| 17 | 4228 |
| 18 | 7495 |
| 19 | 14990 |
| 20 | 27328 |
| 21 | 46611 |
| 22 | 93222 |
| 23 | 168807 |
| 24 | 286581 |
| 25 | 573162 |
| 26 | 1037374 |
| 27 | 1762293 |
| 28 | 3524586 |
| 29 | 6385637 |
| 30 | 12771274 |
| 31 | 23642078 |
| 32 | 41347483 |
| 33 | 82694966 |
| 34 | 151917636 |
| 35 | 263841377 |
| 36 | 527682754 |
| 37 | 967378591 |
| 38 | 1934757182 |
| 39 | 3611535862 |