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 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 2 |
| 5 | 11 |
| 6 | 13 |
| 7 | 34 |
| 8 | 65 |
| 9 | 123 |
| 10 | 266 |
| 11 | 499 |
| 12 | 1037 |
| 13 | 2042 |
| 14 | 4089 |
| 15 | 8219 |
| 16 | 16338 |
| 17 | 32827 |
| 18 | 65485 |
| 19 | 131090 |
| 20 | 262193 |
| 21 | 524155 |
| 22 | 1048794 |
| 23 | 2096899 |
| 24 | 4194509 |
| 25 | 8388586 |
| 26 | 16776937 |
| 27 | 33555099 |
| 28 | 67107874 |
| 29 | 134218827 |
| 30 | 268434701 |
| 31 | 536870786 |
| 32 | 1073743393 |
| 33 | 2147480443 |
| 34 | 4294971818 |