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) |
|---|---|
| 3 | 35 |
| 4 | 30 |
| 5 | 405 |
| 6 | 95 |
| 7 | 6860 |
| 8 | 765 |
| 9 | 28855 |
| 10 | 7923 |
| 11 | 96760 |
| 12 | 380091 |
| 13 | 259064 |
| 14 | 915915 |
| 15 | 3845501 |
| 16 | 1436415 |
| 17 | 32471830 |
| 18 | 11992255 |
| 19 | 62904941 |
| 20 | 182171613 |
| 21 | 266182382 |
| 22 | 670936891 |
| 23 | 939382515 |
| 24 | 2533347310 |
| 25 | 30530860911 |
| 26 | 1876688877 |
| 27 | 16972115903 |
| 28 | 201845686175 |
| 29 | 529756691451 |
| 30 | 409027868651 |
| 31 | 2713039388125 |