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 | 34 |
| 3 | 804 |
| 4 | 18244 |
| 5 | 434205 |
| 6 | 11138766 |
| 7 | 310151632 |
| 8 | 9370253320 |
| 9 | 306232628625 |
| 10 | 10783859167810 |
| 11 | 407523041660196 |
| 12 | 16461877678462668 |
| 13 | 708207095198943613 |
| 14 | 32338800248010936694 |
| 15 | 1562509380160144645440 |
| 16 | 79657105206246202521616 |