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A234662 Number of (n+1) X (4+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings). 1
68086, 286668, 1219652, 5359466, 23814574, 109044744, 504872642, 2403596054, 11568505044, 57131064334, 285141511326, 1457197306648, 7522255453522, 39677254579062, 211248846471052, 1146837458141038, 6278593907701038 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=1:
0 1 3 5 3 4 6 6 3 6 2 2 2 2 0 2 5 2 0 6
0 5 3 1 3 6 4 0 1 0 6 2 6 2 4 1 0 1 3 5
CROSSREFS
Column 4 of A234665.
Sequence in context: A237807 A330414 A237389 * A250924 A206193 A209855
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 29 2013
STATUS
approved

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Last modified July 15 01:36 EDT 2024. Contains 374323 sequences. (Running on oeis4.)