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 | 341 |
| 2 | 561 |
| 3 | 645 |
| 4 | 18705 |
| 5 | 2113665 |
| 6 | 2882265 |
| 7 | 81722145 |
| 8 | 9234602385 |
| 9 | 19154790699045 |
| 10 | 43913624518905 |
| 11 | 56123513337585 |
| 12 | 162522591775545 |
| 13 | 221776809518265 |
| 14 | 3274782926266545 |
| 15 | 4788772759754985 |