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 | 2 |
| 8 | -1 |
| 9 | 1 |
| 10 | 1 |
| 11 | -3 |
| 12 | 7 |
| 13 | -2 |
| 14 | 1 |
| 15 | 1 |
| 16 | 11 |
| 17 | -33 |
| 18 | 16 |
| 19 | -3 |
| 20 | 1 |
| 21 | 1 |
| 22 | -31 |
| 23 | 191 |
| 24 | -119 |
| 25 | 29 |
| 26 | -4 |
| 27 | 1 |
| 28 | 1 |
| 29 | 101 |
| 30 | -1153 |
| 31 | 1015 |
| 32 | -291 |
| 33 | 46 |
| 34 | -5 |
| 35 | 1 |
| 36 | 1 |
| 37 | -328 |
| 38 | 7295 |
| 39 | -9191 |
| 40 | 3293 |
| 41 | -579 |
| 42 | 67 |
| 43 | -6 |
| 44 | 1 |
| 45 | 1 |
| 46 | 1102 |
| 47 | -47617 |
| 48 | 87037 |
| 49 | -39715 |
| 50 | 8171 |
| 51 | -1013 |
| 52 | 92 |
| 53 | -7 |
| 54 | 1 |
| 55 | 1 |
| 56 | -3760 |
| 57 | 318463 |
| 58 | -851186 |
| 59 | 500957 |
| 60 | -123079 |
| 61 | 17131 |
| 62 | -1623 |
| 63 | 121 |