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 | 1 |
| 2 | -9 |
| 3 | 1 |
| 4 | 36 |
| 5 | -9 |
| 6 | 1 |
| 7 | -39 |
| 8 | 27 |
| 9 | -9 |
| 10 | 1 |
| 11 | -114 |
| 12 | -3 |
| 13 | 27 |
| 14 | -9 |
| 15 | 1 |
| 16 | 264 |
| 17 | -117 |
| 18 | -12 |
| 19 | 27 |
| 20 | -9 |
| 21 | 1 |
| 22 | 81 |
| 23 | 111 |
| 24 | -81 |
| 25 | -12 |
| 26 | 27 |
| 27 | -9 |
| 28 | 1 |
| 29 | -429 |
| 30 | 192 |
| 31 | 108 |
| 32 | -90 |
| 33 | -12 |
| 34 | 27 |
| 35 | -9 |
| 36 | 1 |
| 37 | -69 |
| 38 | -153 |
| 39 | 30 |
| 40 | 144 |
| 41 | -90 |
| 42 | -12 |
| 43 | 27 |
| 44 | -9 |
| 45 | 1 |
| 46 | 284 |
| 47 | -387 |
| 48 | 39 |
| 49 | 27 |
| 50 | 135 |
| 51 | -90 |
| 52 | -12 |
| 53 | 27 |
| 54 | -9 |
| 55 | 1 |
| 56 | 364 |
| 57 | 101 |
| 58 | -234 |
| 59 | -123 |
| 60 | 63 |