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 | 2 |
| 3 | -2 |
| 4 | -4 |
| 5 | 8 |
| 6 | -20 |
| 7 | 2 |
| 8 | -58 |
| 9 | 14 |
| 10 | -70 |
| 11 | -4 |
| 12 | 16 |
| 13 | -344 |
| 14 | 112 |
| 15 | -28 |
| 16 | 4 |
| 17 | -556 |
| 18 | 1064 |
| 19 | -152 |
| 20 | 308 |
| 21 | -308 |
| 22 | -8 |
| 23 | 10256 |
| 24 | -3368 |
| 25 | 4576 |
| 26 | -6248 |
| 27 | 2288 |
| 28 | -1144 |
| 29 | 2 |
| 30 | -1622 |
| 31 | 33398 |
| 32 | -98794 |
| 33 | 34606 |
| 34 | -4862 |
| 35 | 2002 |
| 36 | -1430 |
| 37 | -4 |
| 38 | 6688 |
| 39 | -187216 |
| 40 | 140384 |
| 41 | -1242904 |
| 42 | 59488 |
| 43 | -25168 |
| 44 | 77792 |
| 45 | -48620 |