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A185491
Number of (n+1)X4 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum
1
36, 708, 5936, 59384, 559188, 5442964, 52129536, 504455124, 4854725100, 46887124724, 451957889654, 4361947021824, 42069191516912, 405915840934652, 3915635058654824, 37777592945924012, 364442490419332262
OFFSET
1,1
COMMENTS
Column 3 of A185497
LINKS
EXAMPLE
Some solutions for 6X4
..0..1..1..0....0..1..1..1....0..0..0..0....0..0..1..1....0..0..0..0
..0..0..0..1....0..0..0..0....0..0..0..0....0..1..0..0....0..1..0..1
..0..1..0..0....0..1..1..0....1..0..1..0....0..0..0..1....0..1..0..1
..1..0..1..1....1..1..0..0....0..1..1..0....0..1..1..0....1..1..1..0
..1..0..0..0....0..0..0..1....1..0..1..0....0..0..0..1....1..1..1..1
..1..0..1..1....1..1..0..0....1..0..0..0....0..1..0..1....1..0..1..0
CROSSREFS
Sequence in context: A157092 A004419 A268900 * A220758 A054339 A232131
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 29 2011
STATUS
approved