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) |
|---|---|
| 2 | 5 |
| 3 | 13 |
| 4 | 41 |
| 5 | 101 |
| 6 | 277 |
| 7 | 491 |
| 8 | 0 |
| 9 | 577 |
| 10 | 1181 |
| 11 | 1409 |
| 12 | 1201 |
| 13 | 0 |
| 14 | 2801 |
| 15 | 2851 |
| 16 | 1217 |
| 17 | 4013 |
| 18 | 3061 |
| 19 | 1901 |
| 20 | 4241 |
| 21 | 9619 |
| 22 | 10781 |
| 23 | 6947 |
| 24 | 7681 |
| 25 | 8501 |
| 26 | 11597 |
| 27 | 14149 |
| 28 | 18089 |
| 29 | 10847 |