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A233661 Number of (n+1)X(3+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 26 1
6656, 56212, 501200, 5005852, 50997688, 538751292, 5717710176, 61553770120, 662422496208, 7175663136164, 77612411324720, 842364340920784, 9128887620954704, 99132686202841220, 1075213139367059160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A233665

LINKS

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

EXAMPLE

Some solutions for n=2

..3..2..2..2....2..4..2..4....0..0..0..4....0..2..0..3....1..3..1..1

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

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

CROSSREFS

Sequence in context: A043634 A060792 A119519 * A131645 A186086 A236733

Adjacent sequences:  A233658 A233659 A233660 * A233662 A233663 A233664

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 14 2013

STATUS

approved

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Last modified August 11 23:45 EDT 2020. Contains 336434 sequences. (Running on oeis4.)