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 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 11 |
| 5 | 25 |
| 6 | 53 |
| 7 | 113 |
| 8 | 234 |
| 9 | 482 |
| 10 | 982 |
| 11 | 1992 |
| 12 | 4019 |
| 13 | 8091 |
| 14 | 16249 |
| 15 | 32592 |
| 16 | 65305 |
| 17 | 130775 |
| 18 | 261759 |
| 19 | 523798 |
| 20 | 1047949 |
| 21 | 2096360 |
| 22 | 4193302 |
| 23 | 8387353 |
| 24 | 16775641 |
| 25 | 33552474 |
| 26 | 67106428 |
| 27 | 134214718 |
| 28 | 268431738 |
| 29 | 536866347 |
| 30 | 1073736220 |
| 31 | 2147476806 |
| 32 | 4294958947 |
| 33 | 8589924449 |