GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
gap4r8 / pkg / carat / carat-2.1b1 / tables / qcatalog / dim4 / dir.2-1;2-1 / ordnung.16 / (2)^4(8)^2 / min.30
561052 views#g2 4 0 -1 0 0 1 0 0 0 0 0 1 0 0 0 0 -1 4 1 0 0 0 0 1 0 0 0 0 0 -1 0 0 1 0 2^4 = 16 % order of the group