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 | 65 |
| 2 | 4225 |
| 3 | 130828 |
| 4 | 3619683 |
| 5 | 88342972 |
| 6 | 2067672443 |
| 7 | 47015346159 |
| 8 | 1055711535814 |
| 9 | 23532283930933 |
| 10 | 522710080189316 |
| 11 | 11588335111405673 |
| 12 | 256664132470888238 |
| 13 | 5681796685012635460 |
| 14 | 125745518448573773703 |
| 15 | 2782522570829447521632 |