A209786 - OEIS

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A209786

Half the number of (n+1)X8 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference

31161462, 56780957220, 98317767405921, 177700386195973368, 318751987571164698772, 574519716040871948229631, 1034141529418861531701953000, 1862712693163882110368869710778

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

OFFSET

1,1

COMMENTS

Column 7 of A209787

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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