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A233884 Number of (n+1)X(n+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal 0
112, 1960, 65280, 5859504, 1057449360, 537828679688, 530020280813856, 1549770491706017792, 8373471727881913239760 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A233892
LINKS
EXAMPLE
Some solutions for n=3
..5..3..5..6....1..3..1..0....5..3..5..3....2..1..2..1....5..4..1..4
..4..0..1..3....5..2..5..2....1..0..4..0....6..4..6..3....2..6..2..6
..1..2..5..2....4..6..4..6....5..3..5..3....2..5..2..1....1..4..1..4
..4..6..4..0....1..2..1..5....1..0..4..0....6..4..6..3....5..6..5..3
CROSSREFS
Sequence in context: A210300 A210293 A203915 * A246895 A188153 A163194
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2013
STATUS
approved

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Last modified March 29 09:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)