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 | 2 |
| 2 | 11 |
| 3 | 97 |
| 4 | 1145 |
| 5 | 16796 |
| 6 | 293623 |
| 7 | 5950792 |
| 8 | 137075837 |
| 9 | 3535416136 |
| 10 | 100902444181 |
| 11 | 3156570232069 |
| 12 | 107392381479683 |
| 13 | 3947409366073512 |
| 14 | 155880018189733841 |
| 15 | 6581149438442041483 |
| 16 | 295807451972657856921 |
| 17 | 14102499966460374953016 |