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 | 41 |
| 2 | 489 |
| 3 | 7477 |
| 4 | 102545 |
| 5 | 1383105 |
| 6 | 18220241 |
| 7 | 236272677 |
| 8 | 3024972401 |
| 9 | 38333973609 |
| 10 | 481701017577 |
| 11 | 6010309951205 |
| 12 | 74542025956769 |
| 13 | 919716929870465 |
| 14 | 11296618314880209 |
| 15 | 138204770920790229 |
| 16 | 1684906034464128193 |