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 | 2 |
| 2 | -1 |
| 3 | 3 |
| 4 | -4 |
| 5 | 1 |
| 6 | 4 |
| 7 | -11 |
| 8 | 6 |
| 9 | -1 |
| 10 | 5 |
| 11 | -26 |
| 12 | 23 |
| 13 | -8 |
| 14 | 1 |
| 15 | 6 |
| 16 | -57 |
| 17 | 72 |
| 18 | -39 |
| 19 | 10 |
| 20 | -1 |
| 21 | 7 |
| 22 | -120 |
| 23 | 201 |
| 24 | -150 |
| 25 | 59 |
| 26 | -12 |
| 27 | 1 |
| 28 | 8 |
| 29 | -247 |
| 30 | 522 |
| 31 | -501 |
| 32 | 268 |
| 33 | -83 |
| 34 | 14 |
| 35 | -1 |
| 36 | 9 |
| 37 | -502 |
| 38 | 1291 |
| 39 | -1524 |
| 40 | 1037 |
| 41 | -434 |
| 42 | 111 |
| 43 | -16 |
| 44 | 1 |
| 45 | 10 |
| 46 | -1013 |
| 47 | 3084 |
| 48 | -4339 |
| 49 | 3598 |
| 50 | -1905 |
| 51 | 656 |
| 52 | -143 |
| 53 | 18 |
| 54 | -1 |