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A233643 Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 2 1
57456, 3277236, 170872144, 9797170648, 531400908604, 30250564851612, 1663637150636064, 94103848836813810, 5210457711411390232, 293448968580448326270, 16310213444182983776468, 916027510756160768424320 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A233644

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A236152 A340434 A352244 * A166195 A031861 A119887

Adjacent sequences:  A233640 A233641 A233642 * A233644 A233645 A233646

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 14 2013

STATUS

approved

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Last modified September 29 06:36 EDT 2022. Contains 357082 sequences. (Running on oeis4.)