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 | 0 |
| 2 | 1 |
| 3 | -1 |
| 4 | -4 |
| 5 | 0 |
| 6 | 1 |
| 7 | -7 |
| 8 | -18 |
| 9 | -12 |
| 10 | 5 |
| 11 | -11 |
| 12 | -38 |
| 13 | 0 |
| 14 | -7 |
| 15 | -45 |
| 16 | -92 |
| 17 | 0 |
| 18 | -33 |
| 19 | -19 |
| 20 | -120 |
| 21 | -70 |
| 22 | -11 |
| 23 | -69 |
| 24 | -192 |
| 25 | -50 |
| 26 | 13 |
| 27 | -99 |
| 28 | -210 |
| 29 | 0 |
| 30 | -135 |
| 31 | -93 |
| 32 | -352 |
| 33 | -198 |
| 34 | 17 |
| 35 | -245 |
| 36 | -438 |
| 37 | 0 |
| 38 | -19 |
| 39 | -325 |
| 40 | -510 |
| 41 | 0 |
| 42 | -245 |
| 43 | -43 |
| 44 | -550 |
| 45 | -540 |
| 46 | -115 |
| 47 | -235 |
| 48 | -880 |
| 49 | -196 |
| 50 | -175 |
| 51 | -459 |
| 52 | -728 |
| 53 | 0 |
| 54 | -333 |
| 55 | -715 |
| 56 | -1036 |
| 57 | -532 |
| 58 | 29 |
| 59 | -177 |
| 60 | -1230 |
| 61 | 0 |
| 62 | -155 |
| 63 | -1155 |
| 64 | -1440 |
| 65 | -780 |
| 66 | -693 |
| 67 | -67 |
| 68 | -1292 |
| 69 | -966 |
| 70 | -875 |
| 71 | -497 |
| 72 | -1908 |
| 73 | 0 |
| 74 | 37 |
| 75 | -1325 |
| 76 | -1558 |
| 77 | -1232 |
| 78 | -1079 |
| 79 | -395 |
| 80 | -2500 |
| 81 | -864 |
| 82 | 41 |
| 83 | -249 |
| 84 | -2366 |
| 85 | -1360 |
| 86 | -43 |
| 87 | -1479 |
| 88 | -2552 |
| 89 | 0 |
| 90 | -2025 |
| 91 | -1729 |
| 92 | -2346 |
| 93 | -1426 |
| 94 | -423 |
| 95 | -2185 |
| 96 | -3568 |
| 97 | 0 |
| 98 | -637 |
| 99 | -2673 |
| 100 | -3000 |