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 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 41 |
| 5 | 103 |
| 6 | 1237 |
| 7 | 433 |
| 8 | 69281 |
| 9 | 62353 |
| 10 | 6235301 |
| 11 | 8573539 |
| 12 | 164611949 |
| 13 | 5349888343 |
| 14 | 29959374721 |
| 15 | 561738276019 |
| 16 | 35951249665217 |
| 17 | 4701317263913 |
| 18 | 11001082397556421 |
| 19 | 52255141388393 |
| 20 | 4180411311071440001 |
| 21 | 43894318766250120011 |
| 22 | 386270005143001056097 |