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A233683 Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal 0
32, 548, 19248, 1723204, 350631128, 180309108120, 213645503481064, 637071561523768628, 4389462721204153964920, 76077651482837452211667424, 3050446568436589473373323664384, 307742402424024480499984248922221296 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A233691

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A154306 A004417 A283688 * A093751 A178372 A082557

Adjacent sequences:  A233680 A233681 A233682 * A233684 A233685 A233686

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 14 2013

STATUS

approved

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Last modified January 19 21:28 EST 2022. Contains 350466 sequences. (Running on oeis4.)