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 | 8 |
| 2 | 104 |
| 3 | 1092 |
| 4 | 12376 |
| 5 | 136136 |
| 6 | 1514513 |
| 7 | 16776144 |
| 8 | 186135312 |
| 9 | 2063912136 |
| 10 | 22890661872 |
| 11 | 253854868176 |
| 12 | 2815321003313 |
| 13 | 31222272414424 |
| 14 | 346260798314872 |
| 15 | 3840089017377228 |
| 16 | 42587248616222024 |
| 17 | 472299787252290712 |
| 18 | 5237885063192296801 |
| 19 | 58089034826620525728 |