A249470 Number of length 4+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four.

216, 2802, 34832, 206428, 980718, 3512232, 10671554, 28408106, 68141702, 149985134, 308128976, 596635030, 1099154100, 1939520516, 3298783802, 5428583306, 8678985766, 13520275360, 20580791722, 30686017266, 44896600642

Offset: 1

Author

R. H. Hardin, Oct 29 2014

Keywords

• nonn

Comments

Row 4 of A249466

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..69