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 | 22 |
| 3 | 472 |
| 4 | 9581 |
| 5 | 226532 |
| 6 | 5228820 |
| 7 | 121621207 |
| 8 | 2827515311 |
| 9 | 65742420202 |
| 10 | 1528546759636 |
| 11 | 35539596883248 |
| 12 | 826313572773202 |
| 13 | 19212201839186636 |
| 14 | 446693206688680120 |
| 15 | 10385838163314549709 |
| 16 | 241475873187832394155 |