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) |
|---|---|
| 1 | 8 |
| 2 | 49 |
| 3 | 304 |
| 4 | 1876 |
| 5 | 11556 |
| 6 | 71152 |
| 7 | 438048 |
| 8 | 2696784 |
| 9 | 16602304 |
| 10 | 102209216 |
| 11 | 629233216 |
| 12 | 3873764352 |
| 13 | 23848153088 |
| 14 | 146816985344 |
| 15 | 903853103104 |
| 16 | 5564413613056 |
| 17 | 34256339608576 |
| 18 | 210893165924352 |
| 19 | 1298326906544128 |
| 20 | 7992922619695104 |