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 | 2 |
| 3 | 2 |
| 4 | 6 |
| 5 | 11 |
| 6 | 22 |
| 7 | 34 |
| 8 | 61 |
| 9 | 115 |
| 10 | 220 |
| 11 | 397 |
| 12 | 681 |
| 13 | 1329 |
| 14 | 2430 |
| 15 | 4561 |
| 16 | 8116 |
| 17 | 14848 |
| 18 | 24878 |