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 | 1 |
| 2 | 75 |
| 3 | 77 |
| 4 | 637331 |
| 5 | 637333 |
| 6 | 637341 |
| 7 | 637343 |
| 8 | 27067053 |
| 9 | 179992917 |
| 10 | 8179002205 |
| 11 | 2636913002917 |
| 12 | 6201265271239157 |
| 13 | 6201265271239347 |
| 14 | 6201265271239413 |
| 15 | 6201265271239981 |
| 16 | 6201265271240331 |
| 17 | 6201265271240341 |
| 18 | 2159986889494445405 |
| 19 | 2159986889494445525 |
| 20 | 2159986889494445615 |