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 | 2 |
| 4 | 1 |
| 5 | 4 |
| 6 | 0 |
| 7 | 4 |
| 8 | -10 |
| 9 | -5 |
| 10 | 4 |
| 11 | 10 |
| 12 | -22 |
| 13 | 10 |
| 14 | 0 |
| 15 | 0 |
| 16 | -59 |
| 17 | 16 |
| 18 | -46 |
| 19 | 16 |
| 20 | -20 |
| 21 | -8 |
| 22 | 16 |
| 23 | 18 |
| 24 | -120 |
| 25 | 5 |
| 26 | 12 |
| 27 | -76 |
| 28 | -44 |
| 29 | 28 |
| 30 | -48 |
| 31 | 26 |
| 32 | -238 |
| 33 | 12 |
| 34 | 28 |
| 35 | 0 |
| 36 | -221 |
| 37 | 34 |
| 38 | 24 |
| 39 | 4 |
| 40 | -140 |
| 41 | 40 |
| 42 | -96 |
| 43 | 40 |
| 44 | -14 |
| 45 | -92 |
| 46 | 24 |
| 47 | 42 |
| 48 | -478 |
| 49 | -19 |
| 50 | -42 |
| 51 | 24 |
| 52 | -38 |
| 53 | 48 |
| 54 | -384 |
| 55 | 32 |
| 56 | -240 |
| 57 | 16 |
| 58 | 52 |
| 59 | 58 |
| 60 | -288 |
| 61 | 56 |
| 62 | 40 |
| 63 | -164 |
| 64 | -839 |
| 65 | 24 |
| 66 | -48 |
| 67 | 64 |
| 68 | -8 |
| 69 | 12 |
| 70 | -96 |
| 71 | 70 |
| 72 | -850 |
| 73 | 68 |
| 74 | 60 |