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 | 3 |
| 3 | 10 |
| 4 | 3 |
| 5 | 26 |
| 6 | 13 |
| 7 | 50 |
| 8 | -177 |
| 9 | 352 |
| 10 | -84 |
| 11 | 122 |
| 12 | -996 |
| 13 | 170 |
| 14 | -153 |
| 15 | 9704 |
| 16 | -13313 |
| 17 | 290 |
| 18 | -6518 |
| 19 | 362 |
| 20 | -2771 |
| 21 | 107986 |
| 22 | 17073 |
| 23 | 530 |
| 24 | -805070 |
| 25 | 394376 |
| 26 | 99984 |
| 27 | 1203580 |
| 28 | 1196313 |
| 29 | 842 |
| 30 | -4500745 |
| 31 | 962 |
| 32 | -13313025 |
| 33 | 14199222 |
| 34 | 2316234 |
| 35 | 33547310 |
| 36 | -19898071 |
| 37 | 1370 |
| 38 | 10418613 |
| 39 | 168405072 |