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 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 2 |
| 6 | 0 |
| 7 | 1 |
| 8 | -3 |
| 9 | -2 |
| 10 | -8 |
| 11 | -5 |
| 12 | -12 |
| 13 | -4 |
| 14 | -11 |
| 15 | 6 |
| 16 | -1 |
| 17 | 28 |
| 18 | 16 |
| 19 | 56 |
| 20 | 26 |
| 21 | 72 |
| 22 | 3 |
| 23 | 51 |
| 24 | -80 |
| 25 | -19 |
| 26 | -224 |
| 27 | -104 |
| 28 | -373 |
| 29 | -99 |
| 30 | -408 |
| 31 | 154 |
| 32 | -205 |
| 33 | 770 |
| 34 | 222 |
| 35 | 1655 |
| 36 | 540 |
| 37 | 2367 |
| 38 | 24 |
| 39 | 2196 |
| 40 | -2196 |
| 41 | 664 |
| 42 | -6440 |
| 43 | -1555 |
| 44 | -11543 |
| 45 | -1750 |
| 46 | -14427 |
| 47 | 4690 |
| 48 | -11340 |
| 49 | 22009 |
| 50 | -1595 |
| 51 | 49534 |
| 52 | 7008 |
| 53 | 77051 |
| 54 | -5264 |
| 55 | 85296 |
| 56 | -65467 |
| 57 | 57874 |