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) |
|---|---|
| 1 | 19 |
| 2 | 31 |
| 3 | 109 |
| 4 | 199 |
| 5 | 409 |
| 6 | 571 |
| 7 | 631 |
| 8 | 829 |
| 9 | 1489 |
| 10 | 1999 |
| 11 | 2341 |
| 12 | 2971 |
| 13 | 3529 |
| 14 | 4621 |
| 15 | 4789 |
| 16 | 7039 |
| 17 | 7669 |
| 18 | 8779 |
| 19 | 9721 |
| 20 | 10459 |
| 21 | 10711 |
| 22 | 13681 |
| 23 | 14851 |
| 24 | 16069 |
| 25 | 16381 |
| 26 | 17659 |
| 27 | 20011 |
| 28 | 20359 |
| 29 | 23251 |
| 30 | 25939 |
| 31 | 27541 |
| 32 | 29191 |
| 33 | 29611 |
| 34 | 31321 |
| 35 | 34429 |
| 36 | 36739 |
| 37 | 40099 |
| 38 | 40591 |
| 39 | 42589 |