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 | 1 |
| 3 | 1 |
| 4 | -1 |
| 5 | 1 |
| 6 | 3 |
| 7 | -4 |
| 8 | 1 |
| 9 | 1 |
| 10 | 6 |
| 11 | -9 |
| 12 | 3 |
| 13 | 1 |
| 14 | 10 |
| 15 | -15 |
| 16 | 3 |
| 17 | 3 |
| 18 | -1 |
| 19 | 1 |
| 20 | 15 |
| 21 | -20 |
| 22 | -6 |
| 23 | 18 |
| 24 | -8 |
| 25 | 1 |
| 26 | 1 |
| 27 | 21 |
| 28 | -21 |
| 29 | -35 |
| 30 | 60 |
| 31 | -30 |
| 32 | 5 |
| 33 | 1 |
| 34 | 28 |
| 35 | -14 |
| 36 | -98 |
| 37 | 145 |
| 38 | -70 |
| 39 | 5 |
| 40 | 5 |
| 41 | -1 |
| 42 | 1 |
| 43 | 36 |
| 44 | 6 |
| 45 | -210 |
| 46 | 279 |
| 47 | -100 |
| 48 | -45 |
| 49 | 45 |
| 50 | -12 |
| 51 | 1 |
| 52 | 1 |
| 53 | 45 |
| 54 | 45 |
| 55 | -384 |
| 56 | 441 |
| 57 | -21 |
| 58 | -280 |
| 59 | 210 |
| 60 | -63 |
| 61 | 7 |
| 62 | 1 |
| 63 | 55 |
| 64 | 110 |