A234864 - OEIS

A234864

Number of (n+2) X (3+2) 0..3 arrays with each 3 X 3 subblock having the sum of its 72 absolute element differences equal to 52, and no adjacent elements equal.

61954, 272878, 1241772, 6113796, 33431812, 192846644, 1129155378, 6882784048, 43546591390, 271469433824, 1733428722048, 11349225086910, 72370907554790, 470247936237146, 3116595409983744, 20033051082617520, 130971235426879114

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

OFFSET

1,1

COMMENTS

Column 3 of A234867.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..104

EXAMPLE

Some solutions for n=1

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

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

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