activity
19922026
most citedStatistics of lattice animals (polyominoes) and polygons

130 citations · 2k across the 94 of their papers we have counts for

collaborators

98 papers

math.CO2026

Enumerating Pattern-Avoiding Involutions using Combinatorial Exploration

Christian Bean, Anthony J. Guttmann, Jay Pantone

The enumeration of pattern-avoiding permutations has been a popular area of study over the past several decades, but comparatively little attention has been given to the topic of p…

math.CO2026

-Convex Polyominoes by Semi-perimeter

Andrew R. Conway, Anthony J. Guttmann

We give the conjectured solution for the generating function of -convex polyominoes, enumerated by semi-perimeter. The solution was obtained from the analysis of enumeration dat…

cs.DM2026

k-Convex Polyominoes by Semi-perimeter

Andrew R. Conway, Anthony J. Guttmann

We give the conjectured solution for the generating function of k-convex polyominoes, enumerated by semi-perimeter. The solution was obtained from the analysis of enumeration data…

math.CO2026

Counting LEGO configurations

Alexander Gunning, Anthony J Guttmann, Rasmus M Nilsson

We discuss the problem of counting certain LEGO structures, primarily those comprising parallel tiles. These can be combined, as a single LEGO structure, by interlocki…

math.CO2023

Counting occurrences of patterns in permutations

Andrew R Conway, Anthony J Guttmann

We develop a new, powerful method for counting elements in a multiset. As a first application, we use this algorithm to study the number of occurrences of patterns in a permutation…

math.CO2022★ 1 cited

The gerrymander sequence, or A348456

Anthony J Guttmann, Iwan Jensen

Recently Kauers, Koutschan and Spahn announced a significant increase in the length of the so-called {\em gerrymander sequence}, given as A348456 in the OEIS, extending the sequenc…