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 | 3 |
| 4 | 7 |
| 5 | 13 |
| 6 | 23 |
| 7 | 41 |
| 8 | 75 |
| 9 | 139 |
| 10 | 257 |
| 11 | 473 |
| 12 | 869 |
| 13 | 1597 |
| 14 | 2937 |
| 15 | 5403 |
| 16 | 9939 |
| 17 | 18281 |
| 18 | 33623 |
| 19 | 61841 |
| 20 | 113743 |
| 21 | 209207 |
| 22 | 384793 |
| 23 | 707745 |
| 24 | 1301745 |
| 25 | 2394281 |
| 26 | 4403769 |
| 27 | 8099795 |
| 28 | 14897847 |
| 29 | 27401413 |
| 30 | 50399055 |
| 31 | 92698313 |
| 32 | 170498779 |
| 33 | 313596147 |
| 34 | 576793241 |
| 35 | 1060888169 |
| 36 | 1951277557 |