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 | 3 |
| 2 | -2 |
| 3 | 5 |
| 4 | -6 |
| 5 | 7 |
| 6 | -10 |
| 7 | 9 |
| 8 | -20 |
| 9 | 11 |
| 10 | -30 |
| 11 | 13 |
| 12 | -46 |
| 13 | 15 |
| 14 | -56 |
| 15 | 17 |
| 16 | -84 |
| 17 | 19 |
| 18 | -88 |
| 19 | 21 |
| 20 | -116 |
| 21 | 23 |
| 22 | -126 |
| 23 | 25 |
| 24 | -154 |
| 25 | 27 |
| 26 | -164 |
| 27 | 29 |
| 28 | -168 |
| 29 | 31 |
| 30 | -196 |
| 31 | 33 |
| 32 | -206 |
| 33 | 35 |
| 34 | -234 |
| 35 | 37 |
| 36 | -244 |
| 37 | 39 |
| 38 | -272 |
| 39 | 41 |
| 40 | -306 |
| 41 | 43 |
| 42 | -376 |
| 43 | 45 |
| 44 | -386 |
| 45 | 47 |
| 46 | -414 |
| 47 | 49 |
| 48 | -472 |
| 49 | 51 |
| 50 | -518 |
| 51 | 53 |
| 52 | -546 |
| 53 | 55 |
| 54 | -562 |
| 55 | 57 |
| 56 | -584 |
| 57 | 59 |
| 58 | -600 |
| 59 | 61 |
| 60 | -748 |