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A233878
Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11.
1
240, 1224, 6200, 33656, 178704, 1015656, 5566176, 32573400, 181919416, 1082482200, 6108586496, 36673057320, 208076709744, 1254938417144, 7140038828344, 43162651207096, 245918525589328, 1488348259767656
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OFFSET
1,1
COMMENTS
Column 3 of
A233883
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 56*a(n-2) -819*a(n-4) +2791*a(n-6) -3096*a(n-8) +961*a(n-10) -84*a(n-12)
EXAMPLE
Some solutions for n=5
..0..0..0..2....1..0..1..0....0..2..0..2....0..1..2..1....0..1..2..1
..1..2..1..0....0..2..0..2....2..1..2..1....2..0..0..2....2..0..0..2
..2..0..2..0....2..1..2..1....2..0..2..0....1..2..1..2....1..2..1..0
..1..0..1..0....2..0..2..0....0..1..0..1....0..2..0..2....0..2..0..2
..2..0..2..0....2..1..0..1....2..0..2..0....1..2..1..2....2..1..0..1
..0..1..2..1....0..0..2..0....0..1..0..1....2..0..0..0....0..0..2..2
CROSSREFS
Sequence in context:
A234721
A235212
A235205
*
A157766
A268906
A234763
Adjacent sequences:
A233875
A233876
A233877
*
A233879
A233880
A233881
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Dec 17 2013
STATUS
approved
