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 | 11 |
| 2 | 821 |
| 3 | 1031 |
| 4 | 1423 |
| 5 | 5413 |
| 6 | 13691 |
| 7 | 140831 |
| 8 | 220873 |
| 9 | 266023 |
| 10 | 283571 |
| 11 | 464741 |
| 12 | 1596311 |
| 13 | 1660661 |
| 14 | 1966813 |
| 15 | 2655403 |
| 16 | 3303341 |
| 17 | 5191331 |
| 18 | 5485393 |
| 19 | 8125511 |
| 20 | 14241911 |
| 21 | 14848511 |
| 22 | 15586993 |
| 23 | 15852043 |
| 24 | 16539163 |
| 25 | 19608041 |
| 26 | 19696841 |
| 27 | 30624071 |
| 28 | 31809073 |
| 29 | 35493551 |
| 30 | 38335541 |
| 31 | 40430771 |