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 | 1 |
| 1 | 7 |
| 2 | 98 |
| 3 | 1715 |
| 4 | 33614 |
| 5 | 705894 |
| 6 | 15529668 |
| 7 | 353299947 |
| 8 | 8243665430 |
| 9 | 196199237234 |
| 10 | 4744454282204 |
| 11 | 116239129913998 |
| 12 | 2879153833254412 |
| 13 | 71978845831360300 |
| 14 | 1813866914950279560 |
| 15 | 46026872966863343835 |
| 16 | 1175038992212864189670 |