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A233086 Number of 5Xn 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order 1
136, 9842, 875165, 77824814, 6938214854, 618844579511, 55204524946337, 4924730456325950, 439332915121147814, 39192753113196729071, 3496374576586734284957, 311910622275336283545350 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A233082

LINKS

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

FORMULA

Empirical: a(n) = 132*a(n-1) -4507*a(n-2) +66832*a(n-3) -492772*a(n-4) +1765654*a(n-5) -2023881*a(n-6) -4686284*a(n-7) +16006509*a(n-8) -16068834*a(n-9) +5437152*a(n-10) for n>14

EXAMPLE

Some solutions for n=2

..0..0....0..1....0..0....0..0....0..1....0..1....0..1....0..1....0..0....0..1

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

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

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

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

CROSSREFS

Sequence in context: A194014 A248452 A035819 * A278185 A225832 A233172

Adjacent sequences:  A233083 A233084 A233085 * A233087 A233088 A233089

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 03 2013

STATUS

approved

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Last modified August 4 19:02 EDT 2020. Contains 336202 sequences. (Running on oeis4.)