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 | 3 |
| 3 | 2 |
| 4 | -6 |
| 5 | -20 |
| 6 | -28 |
| 7 | -8 |
| 8 | 56 |
| 9 | 144 |
| 10 | 176 |
| 11 | 32 |
| 12 | -352 |
| 13 | -832 |
| 14 | -960 |
| 15 | -128 |
| 16 | 1920 |
| 17 | 4352 |
| 18 | 4864 |
| 19 | 512 |
| 20 | -9728 |
| 21 | -21504 |
| 22 | -23552 |
| 23 | -2048 |
| 24 | 47104 |
| 25 | 102400 |
| 26 | 110592 |
| 27 | 8192 |
| 28 | -221184 |
| 29 | -475136 |
| 30 | -507904 |
| 31 | -32768 |
| 32 | 1015808 |
| 33 | 2162688 |
| 34 | 2293760 |
| 35 | 131072 |
| 36 | -4587520 |
| 37 | -9699328 |