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 | 6 |
| 2 | 18 |
| 3 | 27 |
| 4 | 810 |
| 5 | 243 |
| 6 | 10206 |
| 7 | 2187 |
| 8 | 65610 |
| 9 | 19683 |
| 10 | 1299078 |
| 11 | 177147 |
| 12 | 483611310 |
| 13 | 1594323 |
| 14 | 9565938 |
| 15 | 14348907 |
| 16 | 7317942570 |
| 17 | 129140163 |
| 18 | 103053850074 |
| 19 | 1162261467 |
| 20 | 383546284110 |
| 21 | 10460353203 |
| 22 | 1443528742014 |
| 23 | 94143178827 |
| 24 | 257010878197710 |