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 | 6 |
| 3 | 66 |
| 4 | 666 |
| 5 | 861 |
| 6 | 116886 |
| 7 | 1188111 |
| 8 | 8166861 |
| 9 | 681118686 |
| 10 | 8186688861 |
| 11 | 181886818816 |
| 12 | 616886668881 |
| 13 | 1611611188111 |
| 14 | 6188181818668868161 |
| 15 | 8188686181116816661 |
| 16 | 61116116118118668181 |
| 17 | 686168618118116111616 |
| 18 | 1118166618111681811816 |
| 19 | 66861818861688166881668181 |