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 | 4 |
| 2 | 484 |
| 3 | 49284 |
| 4 | 4937284 |
| 5 | 493817284 |
| 6 | 49382617284 |
| 7 | 4938270617284 |
| 8 | 493827150617284 |
| 9 | 49382715950617284 |
| 10 | 4938271603950617284 |
| 11 | 493827160483950617284 |
| 12 | 49382716049283950617284 |
| 13 | 4938271604937283950617284 |
| 14 | 493827160493817283950617284 |
| 15 | 49382716049382617283950617284 |