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 | 1999 |
| 2 | 2999 |
| 3 | 4999 |
| 4 | 8999 |
| 5 | 13999 |
| 6 | 25999 |
| 7 | 32999 |
| 8 | 35999 |
| 9 | 41999 |
| 10 | 49999 |
| 11 | 52999 |
| 12 | 56999 |
| 13 | 59999 |
| 14 | 70999 |
| 15 | 71999 |
| 16 | 73999 |
| 17 | 77999 |
| 18 | 79999 |
| 19 | 85999 |
| 20 | 94999 |
| 21 | 98999 |
| 22 | 100999 |
| 23 | 101999 |
| 24 | 104999 |
| 25 | 107999 |
| 26 | 133999 |
| 27 | 134999 |
| 28 | 136999 |
| 29 | 137999 |
| 30 | 139999 |
| 31 | 143999 |
| 32 | 157999 |
| 33 | 161999 |
| 34 | 164999 |
| 35 | 172999 |
| 36 | 179999 |