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 | 2 |
| 2 | 8 |
| 3 | -18 |
| 4 | -32 |
| 5 | 50 |
| 6 | 72 |
| 7 | -98 |
| 8 | -128 |
| 9 | -162 |
| 10 | 200 |
| 11 | 242 |
| 12 | 288 |
| 13 | 338 |
| 14 | 512 |
| 15 | -578 |
| 16 | 722 |
| 17 | 800 |
| 18 | 882 |
| 19 | 968 |
| 20 | -1058 |
| 21 | 1152 |
| 22 | 1250 |
| 23 | 1352 |
| 24 | 1458 |
| 25 | -1568 |
| 26 | 1682 |
| 27 | 1800 |
| 28 | 1922 |
| 29 | -2048 |
| 30 | -2178 |
| 31 | -2312 |
| 32 | 2450 |
| 33 | 2592 |
| 34 | -2738 |
| 35 | -2888 |
| 36 | 3042 |
| 37 | 3200 |
| 38 | -3362 |
| 39 | 3528 |
| 40 | -3698 |
| 41 | -3872 |
| 42 | 4232 |
| 43 | -4418 |
| 44 | -4608 |
| 45 | 4802 |
| 46 | -5000 |
| 47 | 5618 |
| 48 | -6050 |
| 49 | 6272 |
| 50 | -6498 |
| 51 | 7938 |
| 52 | -8192 |
| 53 | 8712 |
| 54 | -8978 |
| 55 | -9248 |
| 56 | 9522 |
| 57 | -9800 |