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 | 1 |
| 7 | 2 |
| 8 | -2 |
| 9 | 2 |
| 10 | 1 |
| 11 | -5 |
| 12 | 5 |
| 13 | -4 |
| 14 | 5 |
| 15 | 1 |
| 16 | 13 |
| 17 | -14 |
| 18 | 11 |
| 19 | -7 |
| 20 | 12 |
| 21 | 1 |
| 22 | -33 |
| 23 | 40 |
| 24 | -35 |
| 25 | 20 |
| 26 | -5 |
| 27 | 27 |
| 28 | 1 |
| 29 | 80 |
| 30 | -111 |
| 31 | 113 |
| 32 | -77 |
| 33 | 21 |
| 34 | 34 |
| 35 | 58 |
| 36 | 1 |
| 37 | -184 |
| 38 | 293 |
| 39 | -350 |
| 40 | 294 |
| 41 | -144 |
| 42 | -27 |
| 43 | 238 |
| 44 | 121 |
| 45 | 1 |
| 46 | 402 |
| 47 | -731 |
| 48 | 1021 |
| 49 | -1042 |
| 50 | 716 |
| 51 | -249 |
| 52 | -153 |
| 53 | 1063 |
| 54 | 248 |
| 55 | 1 |
| 56 | -840 |
| 57 | 1726 |
| 58 | -2796 |
| 59 | 3409 |
| 60 | -2982 |
| 61 | 1755 |
| 62 | -724 |
| 63 | 318 |
| 64 | 4037 |
| 65 | 503 |
| 66 | 1 |