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 | 1 |
| 1 | 5 |
| 2 | 251 |
| 3 | 19087 |
| 4 | 1070017 |
| 5 | 134211265 |
| 6 | 703604254357 |
| 7 | 8164168737599 |
| 8 | 8092989203533249 |
| 9 | 12600467236042756559 |
| 10 | 8136836498467582599787 |
| 11 | 440495080723071436695083 |
| 12 | 11816334311483623162503196771 |
| 13 | 19935908483981827227406276943 |
| 14 | 239295997830894998532654988331179 |