Adjacency matrices

C20 C24 C26 C28 C30 C32 C34 C36 C38 C40 C42 C44 C46 C48
C50 C52 C54 C56 C58 C60 C62 C64 C66 C68 C70 C72 C74 C76
C78 C80 C82 C84 C86 C88 C90 C92 C94 C96 C98 C100 C102 C104
C106 C108 C110 C112 C114 C116 C118 C120 C122 C124 C126 C128 C130 C132
C134 C136 C138 C140 C142 C144 C146 C148 C150