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) |
|---|---|
| 4 | 5 |
| 5 | 12 |
| 6 | 17 |
| 7 | 25 |
| 8 | 44 |
| 9 | 76 |
| 10 | 131 |
| 11 | 219 |
| 12 | 376 |
| 13 | 645 |
| 14 | 1107 |
| 15 | 1894 |
| 16 | 3245 |
| 17 | 5564 |
| 18 | 9539 |
| 19 | 16351 |
| 20 | 28027 |
| 21 | 48047 |
| 22 | 82367 |
| 23 | 141200 |
| 24 | 242054 |
| 25 | 414949 |
| 26 | 711342 |
| 27 | 1219443 |
| 28 | 2090471 |
| 29 | 3583662 |
| 30 | 6143420 |
| 31 | 10531575 |
| 32 | 18054123 |
| 33 | 30949916 |
| 34 | 53056987 |
| 35 | 90954815 |
| 36 | 155922504 |
| 37 | 267295659 |
| 38 | 458221026 |