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A233872 Number of (n+1)X(4+1) 0..7 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 21 1
34416, 155104, 907940, 6887232, 57147272, 530983144, 5012939992, 50952500976, 512188465988, 5479606300380, 57126934560812, 630600586218188, 6718939422891932, 75570674572025348, 815496420906106884 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A233875

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..123

EXAMPLE

Some solutions for n=2

..1..7..4..7..1....6..3..0..3..0....0..6..6..6..3....4..7..3..1..1

..4..1..7..1..0....6..0..6..0..6....0..3..0..7..1....1..1..6..7..4

..7..1..0..1..7....1..4..1..4..1....6..0..6..6..3....0..7..3..1..7

CROSSREFS

Sequence in context: A238927 A236796 A252241 * A055001 A164556 A344780

Adjacent sequences:  A233869 A233870 A233871 * A233873 A233874 A233875

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 17 2013

STATUS

approved

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Last modified October 25 17:22 EDT 2021. Contains 348255 sequences. (Running on oeis4.)