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 | 1234549876609 |
| 2 | 9066789454321 |
| 3 | 123452587690084 |
| 4 | 123454387666009 |
| 5 | 123454987660900 |
| 6 | 123456987654400 |
| 7 | 123458987664100 |
| 8 | 123478988652100 |
| 9 | 125688987432100 |
| 10 | 146678985432100 |
| 11 | 445678965432100 |
| 12 | 480096785254321 |
| 13 | 900666783454321 |
| 14 | 906678945432100 |
| 15 | 10223418547690084 |