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 | 561 |
| 2 | 2821 |
| 3 | 6601 |
| 4 | 8911 |
| 5 | 15841 |
| 6 | 29341 |
| 7 | 41041 |
| 8 | 75361 |
| 9 | 101101 |
| 10 | 115921 |
| 11 | 162401 |
| 12 | 172081 |
| 13 | 188461 |
| 14 | 252601 |
| 15 | 314821 |
| 16 | 340561 |
| 17 | 399001 |
| 18 | 410041 |
| 19 | 488881 |
| 20 | 512461 |
| 21 | 530881 |
| 22 | 552721 |
| 23 | 656601 |
| 24 | 658801 |
| 25 | 838201 |
| 26 | 852841 |
| 27 | 1024651 |
| 28 | 1152271 |
| 29 | 1193221 |
| 30 | 1461241 |
| 31 | 1615681 |
| 32 | 1857241 |
| 33 | 1909001 |
| 34 | 2100901 |
| 35 | 2113921 |
| 36 | 2433601 |
| 37 | 2455921 |
| 38 | 2704801 |
| 39 | 3057601 |