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 | 5 |
| 7 | -2 |
| 8 | 1 |
| 9 | 1 |
| 10 | -43 |
| 11 | 12 |
| 12 | -3 |
| 13 | 1 |
| 14 | 1 |
| 15 | 527 |
| 16 | -118 |
| 17 | 22 |
| 18 | -4 |
| 19 | 1 |
| 20 | 1 |
| 21 | -8396 |
| 22 | 1605 |
| 23 | -250 |
| 24 | 35 |
| 25 | -5 |
| 26 | 1 |
| 27 | 1 |
| 28 | 164672 |
| 29 | -27816 |
| 30 | 3810 |
| 31 | -455 |
| 32 | 51 |
| 33 | -6 |
| 34 | 1 |
| 35 | 1 |
| 36 | -3835910 |
| 37 | 585046 |
| 38 | -72492 |
| 39 | 7735 |
| 40 | -749 |
| 41 | 70 |
| 42 | -7 |
| 43 | 1 |
| 44 | 1 |
| 45 | 103464895 |
| 46 | -14459138 |
| 47 | 1649634 |
| 48 | -161336 |
| 49 | 14098 |
| 50 | -1148 |
| 51 | 92 |
| 52 | -8 |
| 53 | 1 |
| 54 | 1 |