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 | 2 |
| 1 | 11 |
| 2 | 123 |
| 3 | 1364 |
| 4 | 15127 |
| 5 | 167761 |
| 6 | 1860498 |
| 7 | 20633239 |
| 8 | 228826127 |
| 9 | 2537720636 |
| 10 | 28143753123 |
| 11 | 312119004989 |
| 12 | 3461452808002 |
| 13 | 38388099893011 |
| 14 | 425730551631123 |
| 15 | 4721424167835364 |
| 16 | 52361396397820127 |
| 17 | 580696784543856761 |
| 18 | 6440026026380244498 |
| 19 | 71420983074726546239 |