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 | 9 |
| 6 | 7 |
| 7 | 6 |
| 8 | 998 |
| 9 | 5 |
| 10 | 6331 |
| 11 | 15866 |
| 12 | 39860 |
| 13 | 100135 |
| 14 | 251616 |
| 15 | 636787 |
| 16 | 1617099 |
| 17 | 4124188 |
| 18 | 10553076 |
| 19 | 27066256 |
| 20 | 69709243 |
| 21 | 179992154 |
| 22 | 465769460 |
| 23 | 1208198239 |
| 24 | 3140421185 |
| 25 | 8179001679 |
| 26 | 21338684878 |
| 27 | 55762147707 |
| 28 | 145935688930 |
| 29 | 382465571795 |
| 30 | 1003652346718 |