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 | 2 |
| 2 | 29 |
| 3 | 1008 |
| 4 | 84162 |
| 5 | 11881408 |
| 6 | 2566742098 |
| 7 | 781250000128 |
| 8 | 318651789038947 |
| 9 | 167619551409708544 |
| 10 | 110462353708225871026 |
| 11 | 89116503268220597579776 |
| 12 | 86380568889558343409300388 |
| 13 | 99045780329059370000000008192 |