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A253292
Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.
1
26784, 167832, 1029888, 8153960, 61286116, 465921688, 3524494796, 26879615668, 204459584768, 1560668372324, 11882769388376, 90517446353584, 689680753666852, 5257319067276484, 40057456786744360, 305206750112569024
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OFFSET
1,1
COMMENTS
Column 4 of
A253294
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=2
..1..0..0..0..0....0..2..2..2..2....1..2..0..0..1....0..1..2..2..2
..0..0..0..2..2....0..2..2..1..1....2..1..0..1..1....1..1..2..2..0
..1..2..2..1..1....1..0..2..0..2....2..2..1..0..2....2..1..0..1..0
CROSSREFS
Sequence in context:
A251303
A385341
A196937
*
A253162
A185774
A234158
Adjacent sequences:
A253289
A253290
A253291
*
A253293
A253294
A253295
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Dec 29 2014
STATUS
approved
