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 | 3 |
| 4 | 1 |
| 5 | 4 |
| 6 | 10 |
| 7 | 4 |
| 8 | 1 |
| 9 | 1 |
| 10 | 7 |
| 11 | 27 |
| 12 | 13 |
| 13 | -13 |
| 14 | -27 |
| 15 | -7 |
| 16 | -1 |
| 17 | 1 |
| 18 | 12 |
| 19 | 69 |
| 20 | 16 |
| 21 | -182 |
| 22 | -376 |
| 23 | -182 |
| 24 | 16 |
| 25 | 69 |
| 26 | 12 |
| 27 | 1 |
| 28 | 1 |
| 29 | 21 |
| 30 | 176 |
| 31 | -88 |
| 32 | -1375 |
| 33 | -3123 |
| 34 | -1608 |
| 35 | 1608 |
| 36 | 3123 |
| 37 | 1375 |
| 38 | 88 |
| 39 | -176 |
| 40 | -21 |
| 41 | -1 |
| 42 | 1 |
| 43 | 38 |
| 44 | 456 |
| 45 | -886 |
| 46 | -8292 |
| 47 | -20322 |
| 48 | -6536 |
| 49 | 35890 |
| 50 | 65862 |
| 51 | 35890 |
| 52 | -6536 |
| 53 | -20322 |
| 54 | -8292 |
| 55 | -886 |
| 56 | 456 |
| 57 | 38 |
| 58 | 1 |