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A234994 Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1
5280, 32256, 222672, 1843956, 16100096, 147975544, 1383273540, 13136508448, 125711250208, 1212052600920, 11747496084952, 114450976252720, 1119844141118852, 11002825088380684, 108500718690978524 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=2:
4 1 2 3 3 6 5 6 4 2 3 2 0 2 0 1 2 3 6 0
3 2 5 4 0 5 6 5 5 1 4 5 1 5 1 0 1 4 5 1
2 3 4 5 3 6 5 2 6 4 5 4 4 6 0 1 2 3 6 4
CROSSREFS
Column 3 of A234998.
Sequence in context: A274361 A223494 A265985 * A223341 A270798 A237002
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 02 2014
STATUS
approved

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Last modified July 14 18:31 EDT 2024. Contains 374322 sequences. (Running on oeis4.)