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 | 12721 |
| 2 | 16921 |
| 3 | 19441 |
| 4 | 24481 |
| 5 | 49681 |
| 6 | 61561 |
| 7 | 104161 |
| 8 | 229321 |
| 9 | 255361 |
| 10 | 259681 |
| 11 | 266401 |
| 12 | 291721 |
| 13 | 298201 |
| 14 | 311041 |
| 15 | 331921 |
| 16 | 419401 |
| 17 | 423481 |
| 18 | 436801 |
| 19 | 446881 |
| 20 | 471241 |
| 21 | 525241 |
| 22 | 532801 |
| 23 | 539401 |
| 24 | 581521 |
| 25 | 600601 |
| 26 | 663601 |
| 27 | 704161 |
| 28 | 709921 |
| 29 | 783721 |
| 30 | 867001 |
| 31 | 904801 |