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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

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

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

Adjacent sequences:  A189809 A189810 A189811 * A189813 A189814 A189815

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 28 2011

STATUS

approved

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Last modified December 8 20:37 EST 2021. Contains 349596 sequences. (Running on oeis4.)