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 | 1 |
| 1 | -7 |
| 2 | 22 |
| 3 | -41 |
| 4 | 51 |
| 5 | -47 |
| 6 | 39 |
| 7 | -39 |
| 8 | 49 |
| 9 | -64 |
| 10 | 80 |
| 11 | -95 |
| 12 | 107 |
| 13 | -118 |
| 14 | 135 |
| 15 | -159 |
| 16 | 180 |
| 17 | -191 |
| 18 | 200 |
| 19 | -220 |
| 20 | 252 |
| 21 | -286 |
| 22 | 314 |
| 23 | -334 |
| 24 | 349 |
| 25 | -370 |
| 26 | 409 |
| 27 | -461 |
| 28 | 505 |
| 29 | -531 |
| 30 | 554 |
| 31 | -593 |
| 32 | 648 |
| 33 | -706 |
| 34 | 758 |
| 35 | -801 |
| 36 | 835 |
| 37 | -870 |
| 38 | 924 |
| 39 | -999 |
| 40 | 1072 |
| 41 | -1126 |
| 42 | 1175 |
| 43 | -1242 |
| 44 | 1327 |
| 45 | -1412 |
| 46 | 1485 |
| 47 | -1546 |
| 48 | 1602 |
| 49 | -1669 |
| 50 | 1764 |
| 51 | -1880 |
| 52 | 1985 |
| 53 | -2061 |