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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 7 |
| 6 | 16 |
| 7 | 29 |
| 8 | 60 |
| 9 | 120 |
| 10 | 238 |
| 11 | 479 |
| 12 | 956 |
| 13 | 1910 |
| 14 | 3817 |
| 15 | 7633 |
| 16 | 15252 |
| 17 | 30491 |
| 18 | 60955 |
| 19 | 121865 |
| 20 | 243650 |
| 21 | 487165 |
| 22 | 974112 |
| 23 | 1947851 |
| 24 | 3895086 |
| 25 | 7789153 |
| 26 | 15576624 |
| 27 | 31150481 |
| 28 | 62296424 |
| 29 | 124585395 |
| 30 | 249158607 |
| 31 | 498297297 |
| 32 | 996562085 |
| 33 | 1993071152 |
| 34 | 3986055928 |
| 35 | 7971971230 |