A189812 Number of right triangles on a (n+1)X8 grid.

124, 434, 972, 1754, 2784, 4032, 5520, 7224, 9128, 11218, 13500, 15938, 18568, 21328, 24216, 27248, 30432, 33728, 37152, 40696, 44376, 48176, 52096, 56128, 60288, 64572, 68968, 73476, 78104, 82844, 87712, 92692, 97784, 102988, 108304, 113740, 119296

Offset: 1

Author

R. H. Hardin Apr 28 2011

Keywords

• nonn

Comments

Column 7 of A189814

Examples

			Some solutions for n=3
..3..5....0..2....2..2....0..3....3..3....0..3....1..7....3..0....2..7....2..5
..1..6....0..7....0..2....2..1....2..3....0..5....0..5....1..0....1..7....2..1
..2..3....1..2....2..7....2..5....3..2....2..3....3..6....3..7....2..6....3..5
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..200

Formula

Empirical: a(n) = 56*n^2 + 1480*n - 12216 for n>48