OFFSET
1,2
COMMENTS
Included in accordance of OEIS policy of including published but incorrect sequences to serve as pointers to the correct versions. - N. J. A. Sloane, Apr 10 2022
LINKS
John S. Rutherford, Sublattice enumeration. IV. Equivalence classes of plane sublattices by parent Patterson symmetry and colour lattice group type, Acta Cryst. (2009). A65, 156-163. See Table 2, row p4mm. Has a typo in a(5).
CROSSREFS
KEYWORD
dead
AUTHOR
Andrey Zabolotskiy, Mar 12 2018
STATUS
approved