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Snarks

Last update: 15 Dec 2020  | Contains: 153863 graphs

A snark is a connected bridgeless cubic graph (i.e., a biconnected cubic graph) with edge chromatic number of four (i.e. it cannot be properly edge-coloured using 3 colours). The census lists all snarks up to the order 30 and was provided by The House of Graphs (source).

OEIS: A130315

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