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 | 1 |
| 2 | 1 |
| 3 | -2 |
| 4 | 1 |
| 5 | 1 |
| 6 | -8 |
| 7 | 8 |
| 8 | -4 |
| 9 | 1 |
| 10 | 1 |
| 11 | -22 |
| 12 | 55 |
| 13 | -52 |
| 14 | 23 |
| 15 | -6 |
| 16 | 1 |
| 17 | 1 |
| 18 | -52 |
| 19 | 290 |
| 20 | -472 |
| 21 | 394 |
| 22 | -188 |
| 23 | 50 |
| 24 | -8 |
| 25 | 1 |
| 26 | 1 |
| 27 | -114 |
| 28 | 1265 |
| 29 | -3624 |
| 30 | 4838 |
| 31 | -3668 |
| 32 | 1750 |
| 33 | -536 |
| 34 | 97 |
| 35 | -10 |
| 36 | 1 |
| 37 | 1 |
| 38 | -240 |
| 39 | 4884 |
| 40 | -24092 |
| 41 | 49239 |
| 42 | -56448 |
| 43 | 40664 |
| 44 | -19320 |
| 45 | 6231 |
| 46 | -1360 |
| 47 | 180 |
| 48 | -12 |
| 49 | 1 |
| 50 | 1 |
| 51 | -494 |
| 52 | 17419 |
| 53 | -142124 |
| 54 | 441625 |
| 55 | -730898 |
| 56 | 749723 |
| 57 | -515944 |
| 58 | 247067 |
| 59 | -83122 |
| 60 | 19673 |
| 61 | -3244 |
| 62 | 331 |
| 63 | -14 |
| 64 | 1 |