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A203885
Number of (n+1)X7 0..6 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements
0
236513641, 195759462871, 209668438383145, 247090069595954263, 300614697430789927465
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A203887
LINKS
Table of n, a(n) for n=1..5.
EXAMPLE
Some solutions for n=4
..3..0..2..2..0..0..3....4..0..1..1..5..3..3....3..4..0..3..3..1..2
..4..3..0..2..2..0..0....0..5..0..1..1..5..3....2..3..4..0..3..3..1
..5..4..3..0..2..2..0....3..0..3..0..1..1..5....3..1..3..4..0..3..3
..2..5..4..3..0..2..2....1..3..4..3..0..1..1....4..3..4..2..4..0..3
..4..2..5..4..3..0..2....1..1..3..5..3..0..1....0..4..5..4..0..6..0
CROSSREFS
Sequence in context: A322061 A029831 A289981 * A335591 A234058 A353554
Adjacent sequences: A203882 A203883 A203884 * A203886 A203887 A203888
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2012
STATUS
approved

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Last modified November 16 14:40 EST 2024. Contains 377794 sequences.
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