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A233874 Number of (n+1)X(6+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 0
1128928, 5878272, 46051092, 530983144, 7353231356, 117645672328, 1973200783776, 35656142816164, 649164399442300, 12542136506595712 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A233875

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A340229 A100365 A234979 * A084554 A339982 A234554

Adjacent sequences:  A233871 A233872 A233873 * A233875 A233876 A233877

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 17 2013

STATUS

approved

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Last modified October 20 14:24 EDT 2021. Contains 348108 sequences. (Running on oeis4.)