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 | -2 |
| 2 | 1 |
| 3 | -1 |
| 4 | -2 |
| 5 | 1 |
| 6 | 5 |
| 7 | -3 |
| 8 | -2 |
| 9 | 1 |
| 10 | 2 |
| 11 | 9 |
| 12 | -5 |
| 13 | -2 |
| 14 | 1 |
| 15 | -13 |
| 16 | 9 |
| 17 | 13 |
| 18 | -7 |
| 19 | -2 |
| 20 | 1 |
| 21 | -5 |
| 22 | -33 |
| 23 | 20 |
| 24 | 17 |
| 25 | -9 |
| 26 | -2 |
| 27 | 1 |
| 28 | 34 |
| 29 | -27 |
| 30 | -61 |
| 31 | 35 |
| 32 | 21 |
| 33 | -11 |
| 34 | -2 |
| 35 | 1 |
| 36 | 13 |
| 37 | 111 |
| 38 | -73 |
| 39 | -97 |
| 40 | 54 |
| 41 | 25 |
| 42 | -13 |
| 43 | -2 |
| 44 | 1 |
| 45 | -89 |
| 46 | 80 |
| 47 | 248 |
| 48 | -151 |
| 49 | -141 |
| 50 | 77 |
| 51 | 29 |
| 52 | -15 |
| 53 | -2 |
| 54 | 1 |
| 55 | -34 |
| 56 | -355 |
| 57 | 252 |
| 58 | 461 |
| 59 | -269 |
| 60 | -193 |
| 61 | 104 |
| 62 | 33 |
| 63 | -17 |
| 64 | -2 |
| 65 | 1 |