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A233948 Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 4 1
780718, 144797048, 27781166008, 5586328225626, 1138816865389902, 234320529225491746, 48397283414008033460, 10019368734553550702208, 2076288413340940926824150, 430539542797104173397070614 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A233949

LINKS

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

EXAMPLE

Some solutions for n=1

..2..0..2..0..0..1..1..2....2..1..2..2..0..0..0..0....0..0..0..0..1..0..0..0

..0..0..0..0..2..2..0..0....0..0..0..2..2..1..2..2....0..2..2..2..1..2..2..2

CROSSREFS

Sequence in context: A146953 A257757 A250690 * A204312 A237089 A206633

Adjacent sequences: A233945 A233946 A233947 * A233949 A233950 A233951

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2013

STATUS

approved

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Last modified November 27 22:56 EST 2022. Contains 358406 sequences. (Running on oeis4.)