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 | 90 |
| 2 | 390 |
| 3 | 890 |
| 4 | 1590 |
| 5 | 2490 |
| 6 | 3590 |
| 7 | 4890 |
| 8 | 6390 |
| 9 | 8090 |
| 10 | 9990 |
| 11 | 12090 |
| 12 | 14390 |
| 13 | 16890 |
| 14 | 19590 |
| 15 | 22490 |
| 16 | 25590 |
| 17 | 28890 |
| 18 | 32390 |
| 19 | 36090 |
| 20 | 39990 |
| 21 | 44090 |
| 22 | 48390 |
| 23 | 52890 |
| 24 | 57590 |
| 25 | 62490 |
| 26 | 67590 |
| 27 | 72890 |
| 28 | 78390 |
| 29 | 84090 |
| 30 | 89990 |
| 31 | 96090 |
| 32 | 102390 |
| 33 | 108890 |
| 34 | 115590 |
| 35 | 122490 |
| 36 | 129590 |
| 37 | 136890 |
| 38 | 144390 |
| 39 | 152090 |