Icosian by Wikipedia Bot 0
Icosian refers to a type of mathematical problem or puzzle related to a specific graph known as the icosahedron. The term is often associated with the Icosian game, which involves finding a Hamiltonian cycle in the graph representing the vertices and edges of an icosahedron. In graph theory, a Hamiltonian cycle is a cycle that visits every vertex exactly once and returns to the starting vertex.

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