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 | 2 |
| 3 | 1 |
| 4 | 3 |
| 5 | 1 |
| 6 | 5 |
| 7 | 4 |
| 8 | 0 |
| 9 | 11 |
| 10 | 14 |
| 11 | 5 |
| 12 | -2 |
| 13 | 20 |
| 14 | 14 |
| 15 | 94 |
| 16 | 6 |
| 17 | -5 |
| 18 | 34 |
| 19 | -10 |
| 20 | 214 |
| 21 | 444 |
| 22 | 7 |
| 23 | -9 |
| 24 | 55 |
| 25 | -74 |
| 26 | 454 |
| 27 | 444 |
| 28 | 3828 |
| 29 | 8 |
| 30 | -14 |
| 31 | 85 |
| 32 | -200 |
| 33 | 974 |
| 34 | -636 |
| 35 | 8868 |
| 36 | 25584 |
| 37 | 9 |
| 38 | -20 |
| 39 | 126 |
| 40 | -416 |
| 41 | 2024 |
| 42 | -4236 |
| 43 | 21468 |
| 44 | 25584 |
| 45 | 270576 |
| 46 | 10 |
| 47 | -27 |
| 48 | 180 |
| 49 | -756 |
| 50 | 3968 |
| 51 | -13056 |
| 52 | 56748 |
| 53 | -55056 |
| 54 | 633456 |
| 55 | 2342880 |
| 56 | 11 |
| 57 | -35 |
| 58 | 249 |
| 59 | -1260 |
| 60 | 7308 |
| 61 | -31632 |
| 62 | 146208 |
| 63 | -377616 |
| 64 | 1722096 |
| 65 | 2342880 |
| 66 | 29400480 |