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 | 10 |
| 3 | 171 |
| 4 | 1711 |
| 5 | 1770 |
| 6 | 10011 |
| 7 | 111117701071 |
| 8 | 17170010070077710 |
| 9 | 101711101707777771 |
| 10 | 701000700077010700 |
| 11 | 1701111717707771071 |
| 12 | 10010107100007777700 |
| 13 | 101770070070071771070 |
| 14 | 170107111111710707070 |
| 15 | 1177170070777107111711 |
| 16 | 70071707101001717077017171 |