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A233923 Number of (n+1)X(3+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 8 and no adjacent elements equal 1
2792, 32496, 405004, 5389600, 73564176, 1020495508, 14257498880, 200008938060, 2811049435848, 39549756517288, 556711349099564, 7838538953766172, 110381080046653952, 1554480581032234832, 21892229373580339212 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A233928
LINKS
FORMULA
Empirical recurrence of order 82 (see link above)
EXAMPLE
Some solutions for n=2
..2..0..2..0....4..3..4..2....3..0..1..4....2..4..1..4....4..1..4..0
..0..2..4..2....2..0..1..3....2..3..0..3....0..2..0..1....3..0..2..1
..2..0..2..4....1..3..0..4....0..4..2..4....1..4..3..0....0..1..4..0
CROSSREFS
Sequence in context: A014895 A106300 A252601 * A340174 A252900 A236637
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2013
STATUS
approved

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Last modified April 22 22:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)