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) |
|---|---|
| 0 | 429 |
| 1 | 1859 |
| 2 | 5291 |
| 3 | 12363 |
| 4 | 25623 |
| 5 | 48879 |
| 6 | 87639 |
| 7 | 149655 |
| 8 | 245586 |
| 9 | 389796 |
| 10 | 601304 |
| 11 | 904904 |
| 12 | 1332474 |
| 13 | 1924494 |
| 14 | 2731794 |
| 15 | 3817554 |
| 16 | 5259579 |
| 17 | 7152873 |
| 18 | 9612537 |
| 19 | 12777017 |
| 20 | 16811729 |
| 21 | 21913089 |
| 22 | 28312977 |
| 23 | 36283665 |
| 24 | 46143240 |
| 25 | 58261554 |