A230065 Number of nX5 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).

0, 225, 3645, 281961, 14082255, 793041921, 43142680647, 2369158188849, 129763431348327, 7112485499815809, 389766441753947727, 21360486977871231969, 1170607520117723187375, 64152453401987618058561

Offset: 1

Author

R. H. Hardin, Oct 08 2013

Keywords

• nonn

Comments

Column 5 of A230068

Examples

			Some solutions for n=3
..0..1..0..2..0....2..0..2..1..1....1..1..1..2..0....0..1..0..1..1
..0..2..1..2..0....2..0..1..1..1....1..1..0..2..1....1..2..0..1..1
..0..2..0..1..0....2..0..2..1..1....1..1..1..1..0....0..2..0..1..1
		

Links

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

Formula

Empirical: a(n) = 59*a(n-1) -13572*a(n-3) +53018*a(n-4) -4614*a(n-5) -84248*a(n-6) +5703584*a(n-7) -22239144*a(n-8) -30968*a(n-9) +2695936*a(n-10) -13901184*a(n-11) [phone]*a(n-12) -1462272*a(n-13) +65536*a(n-15) -1048576*a(n-16) for n>19