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 | 28 |
| 2 | 280 |
| 3 | 1424 |
| 4 | 4853 |
| 5 | 12473 |
| 6 | 28379 |
| 7 | 56088 |
| 8 | 103712 |
| 9 | 175998 |
| 10 | 289559 |
| 11 | 445513 |
| 12 | 675267 |
| 13 | 974698 |
| 14 | 1392138 |
| 15 | 1913166 |
| 16 | 2619191 |
| 17 | 3465655 |
| 18 | 4583225 |
| 19 | 5895042 |
| 20 | 7580998 |
| 21 | 9518912 |
| 22 | 11977473 |
| 23 | 14741143 |
| 24 | 18198445 |
| 25 | 22042896 |
| 26 | 26774380 |
| 27 | 31970892 |
| 28 | 38321697 |
| 29 | 45196741 |