A233990 - OEIS

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A233990

Number of (n+1)X(1+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18

164, 774, 3496, 17156, 81200, 409848, 1995424, 10261264, 50945472, 264997984, 1333409408, 6980548160, 35444523776, 186152208256, 951061641728, 5001337944320, 25661802421248, 134974683653632, 694675975022592

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

OFFSET

1,1

COMMENTS

Column 1 of A233997

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A376402 A105653 A233997 * A223455 A251197 A038670

Adjacent sequences: A233987 A233988 A233989 * A233991 A233992 A233993

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2013

STATUS

approved