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 | 127 |
| 3 | 91127 |
| 4 | 328511 |
| 5 | 1157627 |
| 6 | 2146691 |
| 7 | 12326393 |
| 8 | 125751503 |
| 9 | 693154127 |
| 10 | 751089431 |
| 11 | 1033364333 |
| 12 | 2102071043 |
| 13 | 2222447627 |
| 14 | 2893640627 |
| 15 | 3314613773 |
| 16 | 3951805943 |
| 17 | 6591796877 |
| 18 | 9063964127 |
| 19 | 13464285941 |
| 20 | 16406426423 |
| 21 | 19880486831 |