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 | 108 |
| 2 | 6224 |
| 3 | 220968 |
| 4 | 7002040 |
| 5 | 208984848 |
| 6 | 6004186984 |
| 7 | 167970539096 |
| 8 | 4607603633440 |
| 9 | 124496158984840 |
| 10 | 3323815506994632 |
| 11 | 87881068225023056 |
| 12 | 2304923699010954504 |
| 13 | 60044569367490800584 |
| 14 | 1555171706058316642096 |
| 15 | 40078683916858034569112 |