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A233680 Number of (n+1)X(6+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 6 1
32456, 621904, 11482368, 289389648, 6336415296, 169016684160, 3879764059776, 103768584198400, 2432577744933760, 64581965636210432, 1534644947160682880, 40401905663752484096, 970027110549877187968, 25344617921108520080128 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A233682

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A156423 A236656 A031639 * A243857 A028240 A251000

Adjacent sequences:  A233677 A233678 A233679 * A233681 A233682 A233683

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 14 2013

STATUS

approved

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Last modified December 6 13:05 EST 2021. Contains 349563 sequences. (Running on oeis4.)