New posts in Combinatorics

What can you see on a hexagonal spiral?

Impress Donald Knuth by counting polyominoes on the hyperbolic plane

Concentric rings on a snub square tiling

Multigraphs with a given degree sequence

Number of distinct tilings of an n X n square with free n-polyominoes

Count the number of shortest paths to n

Counting generalized polyominoes

Counting the number of restricted forests on the Möbius ladder of length n

Cycles on the torus

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