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 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 31 |
| 6 | 60 |
| 7 | 116 |
| 8 | 225 |
| 9 | 437 |
| 10 | 849 |
| 11 | 1649 |
| 12 | 3202 |
| 13 | 6217 |
| 14 | 12071 |
| 15 | 23438 |
| 16 | 45510 |
| 17 | 88368 |
| 18 | 171586 |
| 19 | 333171 |
| 20 | 646922 |
| 21 | 1256136 |
| 22 | 2439055 |
| 23 | 4735945 |
| 24 | 9195847 |
| 25 | 17855697 |
| 26 | 34670640 |
| 27 | 67320433 |
| 28 | 130716961 |
| 29 | 253814826 |
| 30 | 492835556 |
| 31 | 956945224 |
| 32 | 1858113016 |
| 33 | 3607922263 |
| 34 | 7005549684 |