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 | 5 |
| 2 | 17 |
| 3 | 4957 |
| 4 | 129277 |
| 5 | 2826443 |
| 6 | 3861083 |
| 7 | 5126483 |
| 8 | 9451573 |
| 9 | 19811083 |
| 10 | 53751743 |
| 11 | 68136617 |
| 12 | 98729003 |
| 13 | 264616831 |
| 14 | 388771421 |
| 15 | 498157871 |
| 16 | 608312141 |
| 17 | 682548511 |
| 18 | 779346653 |
| 19 | 918754301 |
| 20 | 1174179079 |
| 21 | 1700023891 |
| 22 | 2056298683 |
| 23 | 2149703411 |