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 | 5 |
| 2 | 59 |
| 3 | 89 |
| 4 | 509 |
| 5 | 599 |
| 6 | 809 |
| 7 | 859 |
| 8 | 5009 |
| 9 | 5059 |
| 10 | 5099 |
| 11 | 8009 |
| 12 | 8059 |
| 13 | 8089 |
| 14 | 8599 |
| 15 | 8999 |
| 16 | 9059 |
| 17 | 9859 |
| 18 | 50599 |
| 19 | 50909 |
| 20 | 50989 |
| 21 | 55009 |
| 22 | 55589 |
| 23 | 55889 |
| 24 | 58099 |
| 25 | 58889 |
| 26 | 58909 |
| 27 | 59009 |
| 28 | 59509 |
| 29 | 59809 |
| 30 | 59999 |
| 31 | 80599 |
| 32 | 80809 |
| 33 | 80909 |
| 34 | 80989 |
| 35 | 85009 |
| 36 | 85889 |
| 37 | 85909 |
| 38 | 85999 |
| 39 | 88589 |
| 40 | 89009 |
| 41 | 89599 |
| 42 | 89809 |