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 | -2 |
| 3 | -1 |
| 4 | -3 |
| 5 | -5 |
| 6 | -6 |
| 7 | -4 |
| 8 | -7 |
| 9 | -12 |
| 10 | -18 |
| 11 | -9 |
| 12 | -13 |
| 13 | -20 |
| 14 | -32 |
| 15 | -50 |
| 16 | 11 |
| 17 | 2 |
| 18 | -11 |
| 19 | -31 |
| 20 | -63 |
| 21 | -113 |
| 22 | 3 |
| 23 | 14 |
| 24 | 16 |
| 25 | 5 |
| 26 | -26 |
| 27 | -89 |
| 28 | -202 |
| 29 | 6 |
| 30 | 9 |
| 31 | 23 |
| 32 | 39 |
| 33 | 44 |
| 34 | 18 |
| 35 | -71 |
| 36 | -273 |
| 37 | 4 |
| 38 | 10 |
| 39 | 19 |
| 40 | 42 |
| 41 | 81 |
| 42 | 125 |
| 43 | 143 |
| 44 | 72 |
| 45 | -201 |
| 46 | 8 |
| 47 | 12 |
| 48 | 22 |
| 49 | 41 |
| 50 | 83 |
| 51 | 164 |
| 52 | 289 |
| 53 | 432 |
| 54 | 504 |
| 55 | 303 |
| 56 | 7 |
| 57 | 15 |
| 58 | 27 |
| 59 | 49 |
| 60 | 90 |