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A233950 Number of (n+1)X(n+1) 0..5 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
80, 2820, 238800, 52918992, 30386593584, 46042738610392, 183601380666535560, 1941274548685367025892 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A233958

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=2

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

..4..5..3....3..4..2....1..3..1....2..3..5....3..2..4....4..2..3....2..3..5

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

CROSSREFS

Sequence in context: A277764 A328875 A154307 * A324071 A017796 A035735

Adjacent sequences:  A233947 A233948 A233949 * A233951 A233952 A233953

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2013

STATUS

approved

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Last modified January 18 19:44 EST 2022. Contains 350455 sequences. (Running on oeis4.)