#The collapsed adjacency matrices were computed by C. E. Praeger and L. H. Soicher. mats:=[ [ [ 1, 0, 0 ], [ 0, 1, 0 ], [ 0, 0, 1 ] ], [ [ 0, 3510, 0 ], [ 1, 693, 2816 ], [ 0, 351, 3159 ] ], [ [ 0, 0, 28160 ], [ 0, 2816, 25344 ], [ 1, 3159, 25000 ] ] ];