OFFSET
1,5
COMMENTS
The sequence counts "one-sided" polycubes (A000162); chiral polycubes count twice. - John Mason, Sep 19 2024
REFERENCES
W. F. Lunnon, Symmetry of cubical and general polyominoes, pp. 101-108 of R. C. Read, editor, Graph Theory and Computing. Academic Press, NY, 1972.
FORMULA
a(n) = 2*I(n)+E(n)+F(n)+K(n), see Lunnon paper for naming convention. - John Mason, Sep 19 2024
CROSSREFS
KEYWORD
nonn
AUTHOR
Brendan Owen (brendan_owen(AT)yahoo.com), Dec 27 2001
EXTENSIONS
Name clarified by and more terms from John Mason, Sep 19 2024
STATUS
approved