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 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 7 |
| 7 | 14 |
| 8 | 25 |
| 9 | 50 |
| 10 | 101 |
| 11 | 207 |
| 12 | 426 |
| 13 | 902 |
| 14 | 1917 |
| 15 | 4108 |
| 16 | 8887 |
| 17 | 19335 |
| 18 | 42330 |
| 19 | 93130 |
| 20 | 205894 |
| 21 | 456960 |
| 22 | 1018098 |
| 23 | 2275613 |
| 24 | 5102248 |
| 25 | 11471107 |
| 26 | 25856413 |