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 | 0 |
| 2 | 9500000000 |
| 3 | 9628399986 |
| 4 | 9628399987 |
| 5 | 9628399988 |
| 6 | 9628399989 |
| 7 | 9628399990 |
| 8 | 9628399991 |
| 9 | 9628399992 |
| 10 | 9628399993 |
| 11 | 9628399994 |
| 12 | 9628399995 |
| 13 | 10000000000 |
| 14 | 19500000000 |
| 15 | 19628399986 |
| 16 | 19628399987 |
| 17 | 19628399988 |
| 18 | 19628399989 |