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 | 3 |
| 1 | 6 |
| 2 | 5 |
| 3 | 18 |
| 4 | 7 |
| 5 | 43218 |
| 6 | 125 |
| 7 | 1050 |
| 8 | 16807 |
| 9 | 10 |
| 10 | 161051 |
| 11 | 1320550 |
| 12 | 7105308412125 |
| 13 | 7357350 |
| 14 | 265837 |
| 15 | 835182761270 |
| 16 | 2292646180979 |
| 17 | 146410 |
| 18 | 258413198822535882125 |
| 19 | 107718961350 |
| 20 | 1045726245479028578048875581177070937 |
| 21 | 32310040537956402036523898190 |
| 22 | 528950766088569054716797662440479 |