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) |
|---|---|
| 0 | 1 |
| 1 | 14 |
| 2 | 441 |
| 3 | 16464 |
| 4 | 662676 |
| 5 | 27832392 |
| 6 | 1201431588 |
| 7 | 52862989872 |
| 8 | 2359010923038 |
| 9 | 106417603861492 |
| 10 | 4842000975697886 |
| 11 | 221851681068339504 |
| 12 | 10223664969232645476 |
| 13 | 473434331652157890504 |
| 14 | 22014696421825341908436 |
| 15 | 1027352499685182622393680 |
| 16 | 48092938891512611510804145 |