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 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 7 |
| 5 | 13 |
| 6 | 24 |
| 7 | 44 |
| 8 | 83 |
| 9 | 157 |
| 10 | 297 |
| 11 | 567 |
| 12 | 1085 |
| 13 | 2086 |
| 14 | 4019 |
| 15 | 7766 |
| 16 | 15039 |
| 17 | 29181 |
| 18 | 56717 |
| 19 | 110408 |
| 20 | 215225 |
| 21 | 420076 |
| 22 | 820836 |
| 23 | 1605587 |
| 24 | 3143562 |
| 25 | 6160098 |
| 26 | 12080946 |
| 27 | 23710229 |
| 28 | 46565965 |
| 29 | 91512121 |
| 30 | 179947985 |
| 31 | 354043613 |
| 32 | 696935548 |
| 33 | 1372589372 |