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A206175
Number of 7X(n+1) 0..3 arrays with every 2X2 subblock in a row having an equal number of equal diagonal or equal antidiagonal elements, adjacent rows differing in this number, and new values 0..3 introduced in row major order
0
609086, 53494742, 7934434238, 1412613762182, 261163772277422, 48801583349072774
OFFSET
1,1
COMMENTS
Row 6 of A206169
EXAMPLE
Some solutions for n=4
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..1....0..0..0..1..0
..0..1..0..1..0....0..1..0..2..0....1..0..2..0..0....0..2..0..0..2
..3..1..2..1..3....3..1..0..1..0....1..3..2..3..1....1..1..3..3..3
..2..3..1..3..0....3..3..1..3..1....1..1..3..0..3....3..1..1..3..2
..2..3..2..3..1....0..0..0..0..1....3..2..3..1..1....2..2..0..3..0
..0..2..2..2..3....1..0..1..0..0....3..3..3..3..1....0..2..2..0..1
..1..1..3..0..3....3..2..3..2..1....0..0..2..2..0....0..3..1..0..2
CROSSREFS
Sequence in context: A340924 A218107 A274173 * A205429 A308279 A195281
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 04 2012
STATUS
approved