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.

365, 226895, 141615905, 88417171553, 55204524946337, 34467813715307081, 21520525142517911969, 13436680693956706599305, 8389404393896088886849313, 5238057500238107310826087913, 3270464157841452851203199640929

Offset: 1

Author

R. H. Hardin, Dec 03 2013

Keywords

• nonn

Comments

Column 7 of A233082

Examples

			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
		

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) [phone]*a(n-5) -15731352*a(n-6)