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 | 7 |
| 2 | 127 |
| 3 | 2869 |
| 4 | 71631 |
| 5 | 1894007 |
| 6 | 51978529 |
| 7 | 1464209383 |
| 8 | 42050906191 |
| 9 | 1225778575021 |
| 10 | 36156060825127 |
| 11 | 1076772406867549 |
| 12 | 32324178587781393 |
| 13 | 976893529756053501 |
| 14 | 29693248490460447747 |
| 15 | 907027175886637081619 |
| 16 | 27826656707376811715663 |
| 17 | 856949305975908664414097 |