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 | 51 |
| 2 | 473 |
| 3 | 2208 |
| 4 | 7167 |
| 5 | 18583 |
| 6 | 41363 |
| 7 | 82440 |
| 8 | 151125 |
| 9 | 259459 |
| 10 | 422565 |
| 11 | 659000 |
| 12 | 991107 |
| 13 | 1445367 |
| 14 | 2052751 |
| 15 | 2849072 |
| 16 | 3875337 |
| 17 | 5178099 |
| 18 | 6809809 |
| 19 | 8829168 |
| 20 | 11301479 |
| 21 | 14298999 |
| 22 | 17901291 |
| 23 | 22195576 |
| 24 | 27277085 |
| 25 | 33249411 |
| 26 | 40224861 |
| 27 | 48324808 |
| 28 | 57680043 |