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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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified July 14 15:52 EDT 2024. Contains 374322 sequences. (Running on oeis4.)