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 | 2 |
| 5 | 3 |
| 6 | 5 |
| 7 | 7 |
| 8 | 12 |
| 9 | 18 |
| 10 | 31 |
| 11 | 47 |
| 12 | 81 |
| 13 | 125 |
| 14 | 216 |
| 15 | 337 |
| 16 | 583 |
| 17 | 918 |
| 18 | 1590 |
| 19 | 2522 |
| 20 | 4372 |
| 21 | 6977 |
| 22 | 12104 |
| 23 | 19415 |
| 24 | 33703 |
| 25 | 54297 |
| 26 | 94306 |
| 27 | 152507 |
| 28 | 265005 |
| 29 | 429974 |
| 30 | 747450 |
| 31 | 1216297 |
| 32 | 2115118 |
| 33 | 3450817 |
| 34 | 6002813 |
| 35 | 9816460 |
| 36 | 17080924 |
| 37 | 27991422 |
| 38 | 48718380 |
| 39 | 79989880 |
| 40 | 139252802 |
| 41 | 229034820 |
| 42 | 398806718 |