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A234132 Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 9 0
32, 152, 488, 1640, 4904, 16424, 53288, 189992, 673832, 2532392, 9515048, 36874280, 142925864, 562745384, 2215886888 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A234140

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Some solutions for n=5

..3..3..3..3..3..3....0..0..3..3..0..0....0..3..0..3..0..3....1..3..1..3..1..3

..3..0..3..0..3..0....3..0..0..3..3..0....3..3..3..3..3..3....0..1..0..1..0..1

..3..3..3..3..3..3....0..0..3..3..0..0....3..0..3..0..3..0....1..3..1..3..1..3

..0..3..0..3..0..3....3..0..0..3..3..0....1..1..1..1..1..1....0..1..0..1..0..1

..0..0..0..0..0..0....0..0..3..3..0..0....3..0..3..0..3..0....3..1..3..1..3..1

..3..0..3..0..3..0....3..0..0..3..3..0....3..3..3..3..3..3....0..1..0..1..0..1

CROSSREFS

Sequence in context: A234874 A220975 A100172 * A203557 A124998 A126419

Adjacent sequences:  A234129 A234130 A234131 * A234133 A234134 A234135

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2013

STATUS

approved

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Last modified June 26 15:11 EDT 2022. Contains 354884 sequences. (Running on oeis4.)