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 | 0 |
| 4 | -1 |
| 5 | -2 |
| 6 | -3 |
| 7 | -3 |
| 8 | -4 |
| 9 | -3 |
| 10 | -3 |
| 11 | -1 |
| 12 | -2 |
| 13 | 3 |
| 14 | 2 |
| 15 | 5 |
| 16 | 8 |
| 17 | 12 |
| 18 | 11 |
| 19 | 17 |
| 20 | 16 |
| 21 | 21 |
| 22 | 25 |
| 23 | 26 |
| 24 | 25 |
| 25 | 30 |
| 26 | 32 |
| 27 | 29 |
| 28 | 32 |
| 29 | 32 |
| 30 | 31 |
| 31 | 30 |
| 32 | 29 |
| 33 | 21 |
| 34 | 23 |
| 35 | 11 |
| 36 | 17 |
| 37 | 5 |
| 38 | 4 |
| 39 | -13 |
| 40 | -15 |
| 41 | -28 |
| 42 | -29 |
| 43 | -52 |
| 44 | -53 |
| 45 | -76 |
| 46 | -78 |
| 47 | -104 |
| 48 | -105 |
| 49 | -142 |
| 50 | -139 |
| 51 | -168 |
| 52 | -179 |
| 53 | -209 |
| 54 | -210 |
| 55 | -253 |
| 56 | -249 |
| 57 | -278 |
| 58 | -294 |