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 | 13 |
| 1 | 37 |
| 2 | 157 |
| 3 | 877 |
| 4 | 5917 |
| 5 | 46237 |
| 6 | 409117 |
| 7 | 4037917 |
| 8 | 43954717 |
| 9 | 522956317 |
| 10 | 6749977117 |
| 11 | 93928268317 |
| 12 | 1401602636317 |
| 13 | 22324392524317 |
| 14 | 378011820620317 |
| 15 | 6780385526348317 |
| 16 | 128425485935180317 |
| 17 | 2561327494111820317 |
| 18 | 53652269665821260317 |
| 19 | 1177652997443428940317 |