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) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 127 |
| 10 | 211 |
| 11 | 793 |
| 12 | 1288 |
| 13 | 3719 |
| 14 | 6007 |
| 15 | 646439 |
| 16 | 1467077 |
| 17 | 7211843 |
| 18 | 30123763 |
| 19 | 91160937 |
| 20 | 293184840 |
| 21 | 1118980377 |
| 22 | 110635063749 |
| 23 | 319072758997 |
| 24 | 1918239941962 |
| 25 | 9518126978941 |
| 26 | 58119248603131 |
| 27 | 202992067559011 |
| 28 | 1031021295578251 |
| 29 | 4151156602678042 |
| 30 | 650225250329137612 |