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Martin Grüttmüller     Katy Streso

On the existence of a PBD(30, { 4, 5, 7, 8*})

University of Rostock, Department of Mathematics, 2003

https://doi.org/10.18453/rosdok_id00005918

Abstract: In the present paper we will prove by an exhaustive search method that a pairwise balanced design on 30 points with blocks of size 4, 5, 7 and exactly one block of size 8 does not exist.

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