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 | -1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 6 |
| 8 | -4 |
| 9 | 1 |
| 10 | 1 |
| 11 | -27 |
| 12 | 24 |
| 13 | -8 |
| 14 | 1 |
| 15 | 1 |
| 16 | 164 |
| 17 | -157 |
| 18 | 66 |
| 19 | -13 |
| 20 | 1 |
| 21 | 1 |
| 22 | -1133 |
| 23 | 1176 |
| 24 | -571 |
| 25 | 146 |
| 26 | -19 |
| 27 | 1 |
| 28 | 1 |
| 29 | 8930 |
| 30 | -9853 |
| 31 | 5335 |
| 32 | -1621 |
| 33 | 281 |
| 34 | -26 |
| 35 | 1 |
| 36 | 1 |
| 37 | -78739 |
| 38 | 91498 |
| 39 | -53989 |
| 40 | 18635 |
| 41 | -3909 |
| 42 | 491 |
| 43 | -34 |
| 44 | 1 |
| 45 | 1 |
| 46 | 768276 |
| 47 | -933451 |
| 48 | 591157 |
| 49 | -225490 |
| 50 | 54430 |
| 51 | -8382 |
| 52 | 799 |
| 53 | -43 |
| 54 | 1 |