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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | -1 |
| 8 | -1 |
| 9 | -3 |
| 10 | -4 |
| 11 | -7 |
| 12 | -8 |
| 13 | -13 |
| 14 | -15 |
| 15 | -20 |
| 16 | -24 |
| 17 | -31 |
| 18 | -35 |
| 19 | -44 |
| 20 | -50 |
| 21 | -60 |
| 22 | -68 |
| 23 | -80 |
| 24 | -89 |
| 25 | -104 |
| 26 | -115 |
| 27 | -131 |
| 28 | -145 |
| 29 | -164 |
| 30 | -179 |
| 31 | -201 |
| 32 | -219 |
| 33 | -243 |
| 34 | -264 |
| 35 | -291 |
| 36 | -314 |
| 37 | -345 |
| 38 | -371 |
| 39 | -404 |
| 40 | -434 |
| 41 | -471 |
| 42 | -503 |
| 43 | -544 |
| 44 | -580 |
| 45 | -624 |
| 46 | -664 |
| 47 | -712 |
| 48 | -755 |
| 49 | -808 |
| 50 | -855 |
| 51 | -911 |
| 52 | -963 |
| 53 | -1024 |
| 54 | -1079 |
| 55 | -1145 |