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 | 15 |
| 2 | 190 |
| 3 | 2353 |
| 4 | 29056 |
| 5 | 358671 |
| 6 | 4427294 |
| 7 | 54648506 |
| 8 | 674555937 |
| 9 | 8326406594 |
| 10 | 102777312308 |
| 11 | 1268635610806 |
| 12 | 15659451261015 |
| 13 | 193293024178230 |
| 14 | 2385919696236315 |
| 15 | 29450689289430149 |
| 16 | 363525688224433321 |