A234028 - OEIS

A234028

Number of (n+1)X(n+1) 0..4 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1

61, 3059, 591711, 454996327, 1394283842243, 17100147398257787, 841477590887025128591, 166464986867345392587609693, 132584609704248220162949309257517

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Diagonal of A234036

LINKS

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2013

STATUS

approved