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 | 128 |
| 2 | 8042 |
| 3 | 546410 |
| 4 | 36806846 |
| 5 | 2481942354 |
| 6 | 167341334542 |
| 7 | 11282914491066 |
| 8 | 760744103230314 |
| 9 | 51292751478532550 |
| 10 | 3458385370907981754 |
| 11 | 233179719922207016438 |
| 12 | 15722013576638868003178 |
| 13 | 1060048065098345660585310 |