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 | -3 |
| 3 | -2 |
| 4 | 3 |
| 5 | -7 |
| 6 | 7 |
| 7 | -4 |
| 8 | -3 |
| 9 | -9 |
| 10 | 27 |
| 11 | -14 |
| 12 | -10 |
| 13 | -11 |
| 14 | 15 |
| 15 | 20 |
| 16 | 3 |
| 17 | -25 |
| 18 | 35 |
| 19 | -26 |
| 20 | -45 |
| 21 | -15 |
| 22 | 55 |
| 23 | -28 |
| 24 | 13 |
| 25 | 28 |
| 26 | 43 |
| 27 | 22 |
| 28 | -24 |
| 29 | -19 |
| 30 | -91 |
| 31 | -16 |
| 32 | -3 |
| 33 | 7 |
| 34 | 99 |
| 35 | 6 |
| 36 | -58 |
| 37 | -55 |
| 38 | 103 |
| 39 | -8 |
| 40 | 63 |
| 41 | -61 |
| 42 | 55 |
| 43 | -62 |
| 44 | -94 |
| 45 | 71 |
| 46 | 111 |
| 47 | -56 |
| 48 | -16 |
| 49 | -25 |
| 50 | -148 |
| 51 | 58 |
| 52 | -73 |
| 53 | -47 |
| 54 | -107 |
| 55 | 152 |
| 56 | 33 |
| 57 | 67 |
| 58 | 75 |
| 59 | -38 |
| 60 | 196 |
| 61 | -35 |
| 62 | 63 |
| 63 | 148 |
| 64 | 3 |
| 65 | 57 |
| 66 | -53 |
| 67 | -98 |
| 68 | -171 |
| 69 | 9 |
| 70 | -59 |
| 71 | -100 |
| 72 | 78 |
| 73 | -109 |
| 74 | 219 |
| 75 | -208 |
| 76 | -178 |
| 77 | 5 |
| 78 | 13 |