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 | 9 |
| 1 | 209 |
| 2 | 609 |
| 3 | 1209 |
| 4 | 2009 |
| 5 | 3009 |
| 6 | 4209 |
| 7 | 5609 |
| 8 | 7209 |
| 9 | 9009 |
| 10 | 11009 |
| 11 | 13209 |
| 12 | 15609 |
| 13 | 18209 |
| 14 | 21009 |
| 15 | 24009 |
| 16 | 27209 |
| 17 | 30609 |
| 18 | 34209 |
| 19 | 38009 |
| 20 | 42009 |
| 21 | 46209 |
| 22 | 50609 |
| 23 | 55209 |
| 24 | 60009 |
| 25 | 65009 |
| 26 | 70209 |
| 27 | 75609 |
| 28 | 81209 |
| 29 | 87009 |
| 30 | 93009 |
| 31 | 99209 |
| 32 | 105609 |
| 33 | 112209 |
| 34 | 119009 |
| 35 | 126009 |
| 36 | 133209 |
| 37 | 140609 |