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 | 4 |
| 2 | 1111 |
| 3 | 3168 |
| 4 | 7119 |
| 5 | 31488 |
| 6 | 141184 |
| 7 | 698112 |
| 8 | 1169316 |
| 9 | 1621248 |
| 10 | 1687392 |
| 11 | 1938816 |
| 12 | 1967112 |
| 13 | 12469248 |
| 14 | 12822912 |
| 15 | 14112672 |
| 16 | 16616448 |
| 17 | 41484288 |
| 18 | 79817472 |
| 19 | 116149248 |
| 20 | 121911264 |
| 21 | 128894976 |
| 22 | 163319328 |
| 23 | 166491936 |
| 24 | 193916916 |
| 25 | 218431488 |
| 26 | 247984128 |
| 27 | 798142464 |
| 28 | 817883136 |