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 | 27 |
| 2 | 17576 |
| 3 | 571787 |
| 4 | 5177717 |
| 5 | 7797729087 |
| 6 | 25750777177 |
| 7 | 7707245470777 |
| 8 | 744736797077707 |
| 9 | 17373777757776999 |
| 10 | 77777383297757779 |
| 11 | 77077787864771842777 |
| 12 | 2717772770751727979277 |
| 13 | 74677779777959671778577 |
| 14 | 787773477172377877676776 |
| 15 | 77227778717777797207914717 |