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A185570 Number of (n+1)X4 0..3 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum 0
1936, 319448, 13565936, 886180500, 48714917964, 2946419096704, 170291132595760, 10155464818201668 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A185571
LINKS
EXAMPLE
Some solutions for 3X4
..2..1..2..2....2..0..1..2....2..2..0..2....2..2..1..1....0..3..2..0
..2..1..2..0....0..1..1..1....0..1..2..2....0..2..1..2....0..2..0..3
..1..0..1..3....1..3..0..3....3..1..1..1....3..0..2..0....0..3..2..0
CROSSREFS
Sequence in context: A256765 A264109 A188369 * A367679 A031766 A031542
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 31 2011
STATUS
approved

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)