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 | -2 |
| 1 | -2 |
| 2 | -2 |
| 3 | 6 |
| 4 | 6 |
| 5 | 14 |
| 6 | 22 |
| 7 | 30 |
| 8 | 38 |
| 9 | 54 |
| 10 | 30 |
| 11 | 46 |
| 12 | 30 |
| 13 | 14 |
| 14 | -34 |
| 15 | -74 |
| 16 | -154 |
| 17 | -226 |
| 18 | -362 |
| 19 | -498 |
| 20 | -698 |
| 21 | -762 |
| 22 | -1058 |
| 23 | -1218 |
| 24 | -1474 |
| 25 | -1634 |
| 26 | -1890 |
| 27 | -1914 |
| 28 | -2074 |
| 29 | -2002 |
| 30 | -1962 |
| 31 | -1570 |
| 32 | -1210 |
| 33 | -266 |
| 34 | 606 |
| 35 | 2190 |
| 36 | 3454 |
| 37 | 6030 |
| 38 | 8382 |
| 39 | 11926 |
| 40 | 15334 |
| 41 | 20190 |
| 42 | 24758 |
| 43 | 30990 |
| 44 | 36678 |
| 45 | 44134 |