A266098 Number of nX5 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself.

9, 100, 736, 6307, 53442, 457738, 3899732, 33335734, 284461696, 2429715557, 20742789506, 177131531358, 1512387248385, 12914053828252, 110266892304637, 941535315103858, 8039395936919182, 68645593300515776, 586139023034958513

Offset: 1

Author

R. H. Hardin, Dec 21 2015

Keywords

• nonn

Comments

Column 5 of A266101.

Examples

			Some solutions for n=4
..1..0..1..2..1....0..0..0..1..2....0..0..1..1..0....0..0..0..1..2
..0..1..2..0..1....1..2..2..1..2....0..1..1..0..0....1..1..1..1..2
..2..1..0..1..2....1..0..0..1..1....2..1..2..1..2....1..0..0..1..1
..1..0..1..1..0....1..1..2..0..1....0..0..1..1..0....1..1..1..0..1
		

Links

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

Crossrefs

Cf. A266101.

Formula

Empirical: a(n) = a(n-1) +74*a(n-2) +76*a(n-3) -1329*a(n-4) -1483*a(n-5) +10492*a(n-6) +9562*a(n-7) -37686*a(n-8) -32576*a(n-9) +49666*a(n-10) +84934*a(n-11) -16375*a(n-12) -90227*a(n-13) -34968*a(n-14) +34720*a(n-15) +23431*a(n-16) +2409*a(n-17) for n>20