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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | -1 |
| 5 | 1 |
| 6 | 5 |
| 7 | -2 |
| 8 | -2 |
| 9 | 1 |
| 10 | 1 |
| 11 | 15 |
| 12 | 13 |
| 13 | -19 |
| 14 | 3 |
| 15 | 3 |
| 16 | -1 |
| 17 | 1 |
| 18 | 37 |
| 19 | 128 |
| 20 | -26 |
| 21 | -74 |
| 22 | 46 |
| 23 | -4 |
| 24 | -4 |
| 25 | 1 |
| 26 | 1 |
| 27 | 83 |
| 28 | 679 |
| 29 | 755 |
| 30 | -654 |
| 31 | -68 |
| 32 | 230 |
| 33 | -90 |
| 34 | 5 |
| 35 | 5 |
| 36 | -1 |
| 37 | 1 |
| 38 | 177 |
| 39 | 2866 |
| 40 | 9048 |
| 41 | 2091 |
| 42 | -5741 |
| 43 | 1856 |
| 44 | 498 |
| 45 | -545 |
| 46 | 155 |
| 47 | -6 |
| 48 | -6 |
| 49 | 1 |
| 50 | 1 |
| 51 | 367 |
| 52 | 10721 |
| 53 | 67541 |
| 54 | 98069 |
| 55 | -24675 |
| 56 | -35027 |
| 57 | 22717 |
| 58 | -3773 |
| 59 | -1673 |
| 60 | 1099 |
| 61 | -245 |
| 62 | 7 |
| 63 | 7 |
| 64 | -1 |
| 65 | 1 |