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 | 6 |
| 3 | -4 |
| 4 | 7 |
| 5 | -2 |
| 6 | 13 |
| 7 | -15 |
| 8 | 14 |
| 9 | -5 |
| 10 | 25 |
| 11 | -26 |
| 12 | 27 |
| 13 | -23 |
| 14 | 18 |
| 15 | -12 |
| 16 | 19 |
| 17 | -13 |
| 18 | 33 |
| 19 | -37 |
| 20 | 36 |
| 21 | -25 |
| 22 | 37 |
| 23 | -42 |
| 24 | 47 |
| 25 | -33 |
| 26 | 50 |
| 27 | -58 |
| 28 | 52 |
| 29 | -38 |
| 30 | 55 |
| 31 | -49 |
| 32 | 56 |
| 33 | -65 |
| 34 | 63 |
| 35 | -56 |
| 36 | 59 |
| 37 | -47 |
| 38 | 66 |
| 39 | -69 |
| 40 | 68 |
| 41 | -64 |
| 42 | 74 |
| 43 | -73 |
| 44 | 75 |
| 45 | -78 |
| 46 | 77 |
| 47 | -66 |
| 48 | 84 |
| 49 | -77 |
| 50 | 79 |
| 51 | -84 |
| 52 | 88 |
| 53 | -62 |
| 54 | 90 |
| 55 | -97 |
| 56 | 94 |
| 57 | -109 |
| 58 | 96 |
| 59 | -87 |
| 60 | 102 |
| 61 | -91 |
| 62 | 119 |
| 63 | -122 |