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A233709 Number of (n+1)X(n+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 14 0
96, 2624, 136960, 18407992, 5886720368, 4918448758808, 10112718125166672, 53740179167608102520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A233717

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A204624 A090449 A336677 * A268901 A239158 A105254

Adjacent sequences: A233706 A233707 A233708 * A233710 A233711 A233712

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 15 2013

STATUS

approved

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Last modified February 4 23:12 EST 2023. Contains 360082 sequences. (Running on oeis4.)