Enumeration of Polyominoes up to Size N=59

Fuente: arXiv
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Main Author: Shirakawa, Toshihiro
Format: Preprint
Published: 2025
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author Shirakawa, Toshihiro
author_facet Shirakawa, Toshihiro
contents This paper reports the results of numerical computations for determining the number of polyominoes of size n (n-ominoes). We verify the existing counts for n <= 50 and newly compute the total number of polyominoes up to n <= 59, extending the counting limit. This work shows that, in addition to optimizing the search algorithm for the polyomino counting problem, multi-threading dramatically improves computational efficiency.
format Preprint
id arxiv_https___arxiv_org_abs_2510_22446
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Enumeration of Polyominoes up to Size N=59
Shirakawa, Toshihiro
Combinatorics
Discrete Mathematics
05B50
F.2.2; G.2.1
This paper reports the results of numerical computations for determining the number of polyominoes of size n (n-ominoes). We verify the existing counts for n <= 50 and newly compute the total number of polyominoes up to n <= 59, extending the counting limit. This work shows that, in addition to optimizing the search algorithm for the polyomino counting problem, multi-threading dramatically improves computational efficiency.
title Enumeration of Polyominoes up to Size N=59
topic Combinatorics
Discrete Mathematics
05B50
F.2.2; G.2.1
url https://arxiv.org/abs/2510.22446