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 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | -2 |
| 7 | 4 |
| 8 | -1 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 1 |
| 13 | 3 |
| 14 | -9 |
| 15 | 9 |
| 16 | -2 |
| 17 | -21 |
| 18 | 27 |
| 19 | -9 |
| 20 | 1 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 0 |
| 25 | 1 |
| 26 | -4 |
| 27 | 16 |
| 28 | -24 |
| 29 | 16 |
| 30 | -3 |
| 31 | 92 |
| 32 | -176 |
| 33 | 120 |
| 34 | -32 |
| 35 | 3 |
| 36 | -232 |
| 37 | 256 |
| 38 | -96 |
| 39 | 16 |
| 40 | -1 |
| 41 | 0 |
| 42 | 0 |
| 43 | 0 |
| 44 | 0 |
| 45 | 0 |
| 46 | 1 |
| 47 | 5 |
| 48 | -25 |
| 49 | 50 |
| 50 | -50 |
| 51 | 25 |
| 52 | -4 |
| 53 | -315 |
| 54 | 775 |
| 55 | -750 |
| 56 | 350 |
| 57 | -75 |
| 58 | 6 |
| 59 | 2115 |
| 60 | -3275 |
| 61 | 1950 |
| 62 | -550 |
| 63 | 75 |
| 64 | -4 |
| 65 | -3005 |
| 66 | 3125 |
| 67 | -1250 |
| 68 | 250 |
| 69 | -25 |
| 70 | 1 |