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 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 16 |
| 5 | 125 |
| 6 | 1296 |
| 7 | 16807 |
| 8 | 262144 |
| 9 | 4782969 |
| 10 | 100000000 |
| 11 | 2357947691 |
| 12 | 61917364224 |
| 13 | 1792160394037 |
| 14 | 56693912375296 |
| 15 | 1946195068359375 |
| 16 | 72057594037927936 |
| 17 | 2862423051509815793 |
| 18 | 121439531096594251776 |
| 19 | 5480386857784802185939 |
| 20 | 262144000000000000000000 |
| 21 | 13248496640331026125580781 |