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) |
|---|---|
| 0 | 0 |
| 1 | -1 |
| 2 | -2 |
| 3 | -4 |
| 4 | -7 |
| 5 | -4 |
| 6 | -2 |
| 7 | -3 |
| 8 | -5 |
| 9 | -1 |
| 10 | -11 |
| 11 | -13 |
| 12 | -20 |
| 13 | -21 |
| 14 | -23 |
| 15 | -28 |
| 16 | -29 |
| 17 | -35 |
| 18 | -33 |
| 19 | -36 |
| 20 | -42 |
| 21 | -49 |
| 22 | -61 |
| 23 | -67 |
| 24 | -78 |
| 25 | -87 |
| 26 | -81 |
| 27 | -76 |
| 28 | -74 |
| 29 | -73 |
| 30 | -75 |
| 31 | -81 |
| 32 | -81 |
| 33 | -86 |
| 34 | -92 |
| 35 | -98 |
| 36 | -96 |
| 37 | -99 |
| 38 | -98 |
| 39 | -100 |
| 40 | -107 |
| 41 | -119 |
| 42 | -123 |
| 43 | -127 |
| 44 | -132 |
| 45 | -140 |
| 46 | -149 |
| 47 | -142 |
| 48 | -137 |
| 49 | -135 |
| 50 | -143 |