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 | 252601 |
| 2 | 410041 |
| 3 | 1615681 |
| 4 | 2113921 |
| 5 | 10606681 |
| 6 | 10877581 |
| 7 | 11921001 |
| 8 | 26932081 |
| 9 | 44238481 |
| 10 | 54767881 |
| 11 | 82929001 |
| 12 | 120981601 |
| 13 | 128697361 |
| 14 | 208969201 |
| 15 | 246446929 |
| 16 | 255160621 |
| 17 | 278152381 |
| 18 | 280067761 |
| 19 | 311388337 |
| 20 | 325546585 |
| 21 | 334783585 |
| 22 | 416964241 |
| 23 | 533860309 |
| 24 | 593234929 |
| 25 | 672389641 |