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 | -1 |
| 6 | 3 |
| 7 | 1 |
| 8 | -2 |
| 9 | 6 |
| 10 | 0 |
| 11 | 1 |
| 12 | -3 |
| 13 | 11 |
| 14 | -8 |
| 15 | 5 |
| 16 | 1 |
| 17 | -4 |
| 18 | 18 |
| 19 | -28 |
| 20 | 20 |
| 21 | 0 |
| 22 | 1 |
| 23 | -5 |
| 24 | 27 |
| 25 | -66 |
| 26 | 85 |
| 27 | -30 |
| 28 | 7 |
| 29 | 1 |
| 30 | -6 |
| 31 | 38 |
| 32 | -128 |
| 33 | 260 |
| 34 | -238 |
| 35 | 70 |
| 36 | 0 |
| 37 | 1 |
| 38 | -7 |
| 39 | 51 |
| 40 | -220 |
| 41 | 629 |
| 42 | -1014 |
| 43 | 735 |
| 44 | -136 |
| 45 | 9 |
| 46 | 1 |
| 47 | -8 |
| 48 | 66 |
| 49 | -348 |
| 50 | 1300 |
| 51 | -3108 |
| 52 | 4102 |
| 53 | -2216 |
| 54 | 270 |
| 55 | 0 |
| 56 | 1 |
| 57 | -9 |
| 58 | 83 |
| 59 | -518 |
| 60 | 2405 |
| 61 | -7750 |
| 62 | 15631 |
| 63 | -16452 |
| 64 | 6585 |
| 65 | -500 |
| 66 | 11 |