A376822 Number of colorings of a toroidal n X n grid using exactly two colors under translational symmetry.

0, 5, 62, 4154, 1342206, 1908897150, 11488774559742, 288230376353050814, 29850020237398264483838, 12676506002282327791964489726, 21970710674130840874443091905462270, 154866286100907105149651981766316633972734, 4427744605404865645682169434028029029963535286270

Offset

1,2

Links

Andrew Howroyd, Table of n, a(n) for n = 1..50

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

Adjacent sequences: A376819 A376820 A376821 * A376823 A376824 A376825

Keyword

nonn

Author

Andrew Howroyd, Oct 05 2024

Status

approved