Isomorphism types of 3-(20,4,1) designs with A as automorphism group
hex244.gif
hex246.gif hex247.gif
hex252.gif
hex258.gif hex260.gif
hex265.gif hex267.gif hex269.gif hex271.gif
hex278.gif
hex280.gif hex282.gif hex284.gif
hex291.gif hex293.gif
hex296.gif hex298.gif
hex305.gif
hex308.gif hex310.gif
hex312.gif
hex317.gif hex319.gif
hex322.gif hex324.gif