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 | 26 |
| 3 | 426 |
| 4 | 8178 |
| 5 | 176802 |
| 6 | 4206618 |
| 7 | 108577674 |
| 8 | 3011332338 |
| 9 | 89141101506 |
| 10 | 2802596567706 |
| 11 | 93232011912426 |
| 12 | 3271729161905010 |
| 13 | 120810104634555234 |
| 14 | 4683805718871051162 |
| 15 | 190294015841923438026 |
| 16 | 8087576641287426829170 |
| 17 | 358981130096398432055682 |
| 18 | 16615841072836741527510810 |