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 | 19 |
| 2 | 29 |
| 3 | 59 |
| 4 | 79 |
| 5 | 89 |
| 6 | 919 |
| 7 | 929 |
| 8 | 1949 |
| 9 | 1979 |
| 10 | 2909 |
| 11 | 2939 |
| 12 | 2969 |
| 13 | 3919 |
| 14 | 3929 |
| 15 | 3989 |
| 16 | 4909 |
| 17 | 4919 |
| 18 | 4969 |
| 19 | 5939 |
| 20 | 6949 |
| 21 | 6959 |
| 22 | 7919 |
| 23 | 7949 |
| 24 | 8929 |
| 25 | 8969 |
| 26 | 90989 |
| 27 | 91909 |
| 28 | 91939 |
| 29 | 91969 |
| 30 | 92959 |
| 31 | 93949 |
| 32 | 93979 |
| 33 | 94949 |
| 34 | 95929 |
| 35 | 95959 |
| 36 | 95989 |
| 37 | 96959 |
| 38 | 96979 |
| 39 | 96989 |
| 40 | 97919 |
| 41 | 98909 |
| 42 | 98929 |