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 | 0 |
| 1 | 1 |
| 2 | 83 |
| 3 | 6727 |
| 4 | 544895 |
| 5 | 44136511 |
| 6 | 3575057423 |
| 7 | 289579651327 |
| 8 | 23455951757615 |
| 9 | 1899932092367071 |
| 10 | 153894499481733263 |
| 11 | 12465454458020395327 |
| 12 | 1009701811099652023535 |
| 13 | 81785846699071813910431 |
| 14 | 6624653582624816926753103 |