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 | 12 |
| 2 | 280 |
| 3 | 3853 |
| 4 | 59126 |
| 5 | 898493 |
| 6 | 13706771 |
| 7 | 209181266 |
| 8 | 3184995895 |
| 9 | 48548926944 |
| 10 | 740019106008 |
| 11 | 11277857830329 |
| 12 | 171883749077632 |
| 13 | 2619682437092951 |
| 14 | 39926222792932513 |
| 15 | 608509663116604097 |
| 16 | 9274219880373144746 |