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 | 1 |
| 2 | 16 |
| 3 | 81 |
| 4 | 1681 |
| 5 | 11881 |
| 6 | 1666681 |
| 7 | 818188816 |
| 8 | 6168688681 |
| 9 | 6661661161 |
| 10 | 611686666816 |
| 11 | 1111166866161 |
| 12 | 11168168618161 |
| 13 | 18886681666161 |
| 14 | 666868181611681 |
| 15 | 866686868686116 |
| 16 | 16668111611611681 |
| 17 | 668881818661618116 |
| 18 | 866881188818186116 |
| 19 | 6181118111681186116 |
| 20 | 6811866166886681616 |