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A233887 Number of (n+1)X(3+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 1
1264, 9376, 65280, 496200, 3580624, 27131156, 197246776, 1489635452, 10865513648, 81862032376, 598379968648, 4500240416436, 32947358044272, 247440445604280, 1813879830869864, 13606842940349600, 99852380084946000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A233892
LINKS
FORMULA
Empirical recurrence of order 58 (see link above)
EXAMPLE
Some solutions for n=3
..2..0..2..6....4..0..1..0....2..0..2..6....3..1..4..5....6..2..0..2
..1..4..1..3....5..2..5..3....1..4..1..3....2..5..6..2....4..5..4..1
..5..6..2..6....1..0..4..0....5..6..2..6....3..1..4..1....0..3..0..2
..1..4..1..3....5..2..5..2....1..3..1..4....6..2..6..2....1..5..4..5
CROSSREFS
Sequence in context: A331824 A234676 A237327 * A234147 A252562 A364610
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2013
STATUS
approved

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Last modified February 26 15:39 EST 2024. Contains 370352 sequences. (Running on oeis4.)