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 | 1 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | -1 |
| 8 | 0 |
| 9 | 1 |
| 10 | 1 |
| 11 | -2 |
| 12 | -3 |
| 13 | 0 |
| 14 | 1 |
| 15 | 1 |
| 16 | -3 |
| 17 | -14 |
| 18 | 11 |
| 19 | 0 |
| 20 | 1 |
| 21 | 1 |
| 22 | -4 |
| 23 | -47 |
| 24 | 136 |
| 25 | 1 |
| 26 | 0 |
| 27 | 1 |
| 28 | 1 |
| 29 | -5 |
| 30 | -134 |
| 31 | 909 |
| 32 | 106 |
| 33 | -81 |
| 34 | 0 |
| 35 | 1 |
| 36 | 1 |
| 37 | -6 |
| 38 | -347 |
| 39 | 4736 |
| 40 | 3585 |
| 41 | -8492 |
| 42 | 141 |
| 43 | 0 |
| 44 | 1 |
| 45 | 1 |
| 46 | -7 |
| 47 | -846 |
| 48 | 21655 |
| 49 | 61906 |
| 50 | -323523 |
| 51 | 35344 |
| 52 | 363 |
| 53 | 0 |
| 54 | 1 |
| 55 | 1 |
| 56 | -8 |
| 57 | -1983 |
| 58 | 91512 |
| 59 | 771601 |
| 60 | -8065624 |
| 61 | 2201809 |
| 62 | 395008 |
| 63 | -1791 |
| 64 | 0 |
| 65 | 1 |