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 | 19 |
| 4 | 85 |
| 5 | 31 |
| 6 | 469 |
| 7 | 253 |
| 8 | 2025 |
| 9 | 5995 |
| 10 | 4061 |
| 11 | 15742 |
| 12 | 48061 |
| 13 | 8191 |
| 14 | 220543 |
| 15 | 384766 |
| 16 | 3080161 |
| 17 | 3272671 |
| 18 | 6192631 |
| 19 | 8385271 |
| 20 | 31453021 |
| 21 | 58159102 |
| 22 | 249495467 |
| 23 | 401469279 |
| 24 | 268418041 |
| 25 | 134193151 |
| 26 | 2885548927 |
| 27 | 1610563582 |
| 28 | 8589393821 |
| 29 | 33280753395 |
| 30 | 83751780091 |
| 31 | 171658174447 |