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A189812 Number of right triangles on a (n+1)X8 grid 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A189814
LINKS
FORMULA
Empirical: a(n) = 56*n^2 + 1480*n - 12216 for n>48
EXAMPLE
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
CROSSREFS
Sequence in context: A204642 A204635 A102589 * A230830 A038645 A038859
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 28 2011
STATUS
approved

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Last modified April 18 15:48 EDT 2024. Contains 371780 sequences. (Running on oeis4.)