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A233081 Number of nX7 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
365, 226895, 141615905, 88417171553, 55204524946337, 34467813715307081, 21520525142517911969, 13436680693956706599305, 8389404393896088886849313, 5238057500238107310826087913, 3270464157841452851203199640929 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A233082

LINKS

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

FORMULA

Empirical: a(n) = 693*a(n-1) -44261*a(n-2) +890611*a(n-3) -7150206*a(n-4) +22034516*a(n-5) -15731352*a(n-6)

EXAMPLE

Some solutions for n=1

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

CROSSREFS

Sequence in context: A208566 A209099 A233017 * A209106 A208257 A223132

Adjacent sequences:  A233078 A233079 A233080 * A233082 A233083 A233084

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 03 2013

STATUS

approved

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Last modified August 4 07:32 EDT 2020. Contains 336201 sequences. (Running on oeis4.)