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 | 0 |
| 2 | 1 |
| 3 | 512 |
| 4 | 513 |
| 5 | 19683 |
| 6 | 20195 |
| 7 | 20196 |
| 8 | 262144 |
| 9 | 281827 |
| 10 | 282339 |
| 11 | 282340 |
| 12 | 1953125 |
| 13 | 2215269 |
| 14 | 2234952 |
| 15 | 2235464 |
| 16 | 2235465 |
| 17 | 10077696 |
| 18 | 12030821 |
| 19 | 12292965 |
| 20 | 12312648 |
| 21 | 12313160 |
| 22 | 12313161 |
| 23 | 40353607 |
| 24 | 50431303 |
| 25 | 52384428 |
| 26 | 52646572 |
| 27 | 52666255 |
| 28 | 52666767 |
| 29 | 52666768 |
| 30 | 134217728 |