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 | 0 |
| 7 | 6 |
| 8 | 6 |
| 9 | 27 |
| 10 | 49 |
| 11 | 125 |
| 12 | 258 |
| 13 | 579 |
| 14 | 1202 |
| 15 | 2512 |
| 16 | 5157 |
| 17 | 10463 |
| 18 | 20949 |
| 19 | 41627 |
| 20 | 81912 |
| 21 | 159834 |
| 22 | 309641 |
| 23 | 595836 |
| 24 | 1139211 |
| 25 | 2165502 |
| 26 | 4094219 |
| 27 | 7701857 |
| 28 | 14420351 |
| 29 | 26880988 |
| 30 | 49902183 |
| 31 | 92279657 |
| 32 | 170020844 |
| 33 | 312173822 |
| 34 | 571307477 |
| 35 | 1042310911 |
| 36 | 1896039086 |
| 37 | 3439404321 |
| 38 | 6222483152 |