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 | 22 |
| 2 | 313 |
| 3 | 4366 |
| 4 | 60817 |
| 5 | 847078 |
| 6 | 11798281 |
| 7 | 164328862 |
| 8 | 2288805793 |
| 9 | 31878952246 |
| 10 | 444016525657 |
| 11 | 6184352406958 |
| 12 | 86136917171761 |
| 13 | 1199732487997702 |
| 14 | 16710117914796073 |
| 15 | 232741918319147326 |
| 16 | 3241676738553266497 |
| 17 | 45150732421426583638 |
| 18 | 628868577161418904441 |