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 | 1 |
| 1 | 3 |
| 2 | 5 |
| 3 | 7 |
| 4 | 9 |
| 5 | 11 |
| 6 | 13 |
| 7 | 15 |
| 8 | 17 |
| 9 | 19 |
| 10 | 300 |
| 11 | 320 |
| 12 | 340 |
| 13 | 360 |
| 14 | 380 |
| 15 | 400 |
| 16 | 420 |
| 17 | 440 |
| 18 | 460 |
| 19 | 480 |
| 20 | 14000 |
| 21 | 14200 |
| 22 | 14400 |
| 23 | 14600 |
| 24 | 14800 |
| 25 | 15000 |
| 26 | 15200 |
| 27 | 15400 |
| 28 | 15600 |
| 29 | 15800 |
| 30 | 1060000 |
| 31 | 1062000 |
| 32 | 1064000 |
| 33 | 1066000 |
| 34 | 1068000 |
| 35 | 1070000 |
| 36 | 1072000 |
| 37 | 1074000 |
| 38 | 1076000 |
| 39 | 1078000 |
| 40 | 100800000 |
| 41 | 100820000 |