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 | 3 |
| 2 | 8 |
| 3 | 17 |
| 4 | 32 |
| 5 | 57 |
| 6 | 100 |
| 7 | 177 |
| 8 | 320 |
| 9 | 593 |
| 10 | 1124 |
| 11 | 2169 |
| 12 | 4240 |
| 13 | 8361 |
| 14 | 16580 |
| 15 | 32993 |
| 16 | 65792 |
| 17 | 131361 |
| 18 | 262468 |
| 19 | 524649 |
| 20 | 1048976 |
| 21 | 2097593 |
| 22 | 4194788 |
| 23 | 8389137 |
| 24 | 16777792 |
| 25 | 33555057 |
| 26 | 67109540 |
| 27 | 134218457 |
| 28 | 268436240 |