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 | 1 |
| 2 | 3 |
| 3 | 31 |
| 4 | 901 |
| 5 | 45741 |
| 6 | 3960871 |
| 7 | 584698843 |
| 8 | 130554106761 |
| 9 | 40790044059481 |
| 10 | 17681098707667531 |
| 11 | 10491554658622447191 |
| 12 | 8198225417359164798733 |
| 13 | 8172446419302496167191941 |
| 14 | 10264848632098736708582150511 |