Dataset for Classifying Generalized Howell Designs

The files contain Howell designs obtained in the study "P.R.J. Östergård, Classifying Generalized Howell Designs". The designs are listed as codes. The file name N-M.txt contains the main parameters of the codes, which are repeated in the first two lines of the file: N is the size of the alphabet and the length of the code and M is the number of codewords. The order of the automorphism group (considering isometry; see the paper for details) is given after the codewords. Several of the classification results are old, but the codes are included here for completeness.