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) |
|---|---|
| 0 | 0 |
| 1 | 12345679 |
| 2 | 24691358 |
| 3 | 37037037 |
| 4 | 49382716 |
| 5 | 61728395 |
| 6 | 74074074 |
| 7 | 86419753 |
| 8 | 98765432 |
| 9 | 111111111 |
| 10 | 123456790 |
| 11 | 135802469 |
| 12 | 148148148 |
| 13 | 160493827 |
| 14 | 172839506 |
| 15 | 185185185 |
| 16 | 197530864 |
| 17 | 209876543 |
| 18 | 222222222 |
| 19 | 234567901 |
| 20 | 246913580 |
| 21 | 259259259 |
| 22 | 271604938 |
| 23 | 283950617 |
| 24 | 296296296 |
| 25 | 308641975 |