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) |
|---|---|
| 5 | 1 |
| 6 | 5 |
| 7 | 19 |
| 8 | 62 |
| 9 | 204 |
| 10 | 627 |
| 11 | 2006 |
| 12 | 6045 |
| 13 | 19091 |
| 14 | 56804 |
| 15 | 177431 |
| 16 | 523072 |
| 17 | 1618006 |
| 18 | 4739853 |
| 19 | 14544372 |
| 20 | 42440871 |
| 21 | 129419597 |
| 22 | 376877914 |
| 23 | 1143885829 |
| 24 | 3328765378 |
| 25 | 10068808024 |
| 26 | 29308488795 |
| 27 | 88433869354 |
| 28 | 257651383313 |
| 29 | 776063514999 |
| 30 | 2264100874960 |
| 31 | 6811218232163 |
| 32 | 19903182431380 |