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 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 3 |
| 7 | 0 |
| 8 | 19 |
| 9 | 5 |
| 10 | 16 |
| 11 | 0 |
| 12 | 155 |
| 13 | 0 |
| 14 | 97 |
| 15 | 17 |
| 16 | 6317 |
| 17 | 0 |
| 18 | 1901 |
| 19 | 0 |
| 20 | 8248 |
| 21 | 119 |
| 22 | 10487 |
| 23 | 0 |
| 24 | 471995 |
| 25 | 119 |
| 26 | 151971 |
| 27 | 152701 |