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A234406 Number of (n+1)X(1+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 12 and no adjacent elements equal 1
300, 2540, 21288, 185000, 1604528, 14012832, 122325680, 1069226864, 9345048848, 81695419072, 714175865792, 6243557498768, 54582978669760, 477184127534528, 4171712443846912, 36470643136674336, 318839705961752720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A234412

LINKS

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

FORMULA

Empirical: a(n) = 10*a(n-1) +20*a(n-2) -301*a(n-3) -44*a(n-4) +2831*a(n-5) -301*a(n-6) -8624*a(n-7) -3046*a(n-8) +4932*a(n-9) +2352*a(n-10)

EXAMPLE

Some solutions for n=4

..0..2....5..4....6..3....3..1....5..0....6..4....2..0....1..3....5..0....0..2

..3..6....6..0....2..0....0..4....6..4....1..0....6..2....4..0....6..4....3..6

..5..2....4..2....5..6....2..6....0..3....6..4....1..0....6..2....0..2....0..1

..6..0....6..0....0..1....1..0....2..6....4..0....3..6....3..5....6..3....1..6

..4..3....4..2....1..6....6..2....0..3....5..6....0..2....4..0....0..2....5..4

CROSSREFS

Sequence in context: A128391 A328132 A234412 * A092715 A241943 A036517

Adjacent sequences:  A234403 A234404 A234405 * A234407 A234408 A234409

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 25 2013

STATUS

approved

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Last modified October 20 20:24 EDT 2019. Contains 328273 sequences. (Running on oeis4.)