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A233936 Number of (n+1)X(3+1) 0..7 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 16 1
12880, 85080, 560388, 4772576, 39604088, 441130784, 4313971392, 56743803908, 598848778976, 8443305391368, 91646071697288, 1324262960724308, 14519168847916668, 211520410014129272, 2328220470441684104 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A233939

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..5..2..7..2....2..1..1..6....5..4..0..5....7..4..2..7....7..6..2..5

..4..7..6..5....3..6..2..1....0..5..3..4....2..5..7..6....7..2..6..7

..5..2..7..2....2..1..3..6....1..2..0..5....7..6..2..5....7..6..2..7

CROSSREFS

Sequence in context: A245793 A251922 A184453 * A158918 A185885 A212079

Adjacent sequences:  A233933 A233934 A233935 * A233937 A233938 A233939

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2013

STATUS

approved

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Last modified October 16 05:51 EDT 2019. Contains 328044 sequences. (Running on oeis4.)