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A205165
Number of (n+1)X4 0..3 arrays with every 2X2 subblock having unequal diagonal elements or unequal antidiagonal elements, and new values 0..3 introduced in row major order
1
2277, 474853, 100138314, 21125224557, 4456641224469, 940186880752830, 198344748421652865, 41843425013764138653, 8827419081375312655218, 1862259784246483153159029, 392868116042984604835902933
OFFSET
1,1
COMMENTS
Column 3 of A205170
LINKS
FORMULA
Empirical: a(n) = 224*a(n-1) -2803*a(n-2) +11196*a(n-3) -16677*a(n-4) +9438*a(n-5) -1728*a(n-6)
EXAMPLE
Some solutions for n=4
..0..0..1..0....0..1..1..0....0..0..0..0....0..0..1..2....0..0..0..0
..2..3..1..0....0..0..2..0....0..1..1..0....0..3..3..0....0..1..1..0
..0..1..1..1....0..2..1..1....2..2..2..2....1..0..1..2....2..0..1..0
..1..2..2..3....3..1..0..0....3..2..3..3....1..1..1..0....2..0..1..2
..0..3..3..0....1..0..2..3....1..1..2..1....1..0..3..2....1..3..0..0
CROSSREFS
Sequence in context: A349941 A349938 A195222 * A166222 A203725 A247401
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2012
STATUS
approved