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A376822
Number of colorings of a toroidal n X n grid using exactly two colors under translational symmetry.
6
0, 5, 62, 4154, 1342206, 1908897150, 11488774559742, 288230376353050814, 29850020237398264483838, 12676506002282327791964489726, 21970710674130840874443091905462270, 154866286100907105149651981766316633972734, 4427744605404865645682169434028029029963535286270
OFFSET
1,2
LINKS
FORMULA
a(n) = A179043(n) - 2.
CROSSREFS
Main diagonal of A294684.
Cf. A179043, A376747 (colors permutable), A376823, A376824, A376825.
Sequence in context: A360345 A371370 A307783 * A319624 A182118 A111387
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Oct 05 2024
STATUS
approved