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 | -1 |
| 2 | -3 |
| 3 | 0 |
| 4 | 0 |
| 5 | 9 |
| 6 | 5 |
| 7 | 4 |
| 8 | -1 |
| 9 | -27 |
| 10 | -2 |
| 11 | -33 |
| 12 | -17 |
| 13 | 8 |
| 14 | 43 |
| 15 | 92 |
| 16 | 36 |
| 17 | 100 |
| 18 | -8 |
| 19 | -11 |
| 20 | -136 |
| 21 | -120 |
| 22 | -296 |
| 23 | -363 |
| 24 | -13 |
| 25 | -203 |
| 26 | 286 |
| 27 | 306 |
| 28 | 1010 |
| 29 | 667 |
| 30 | 724 |
| 31 | 790 |
| 32 | 151 |
| 33 | -258 |
| 34 | -1207 |
| 35 | -964 |
| 36 | -3325 |
| 37 | -2059 |
| 38 | -2924 |
| 39 | -1992 |
| 40 | -2116 |
| 41 | 1277 |
| 42 | 3625 |
| 43 | 4437 |
| 44 | 7724 |
| 45 | 7734 |
| 46 | 11524 |
| 47 | 5801 |
| 48 | 9685 |
| 49 | -855 |
| 50 | -2799 |
| 51 | -13409 |
| 52 | -16423 |