A070104 Number of integer triangles with perimeter n and relatively prime side lengths which are obtuse and scalene.

0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 2, 1, 2, 2, 3, 1, 4, 3, 6, 2, 7, 4, 8, 4, 8, 6, 10, 6, 12, 8, 14, 8, 16, 11, 18, 11, 17, 14, 21, 12, 25, 18, 25, 15, 30, 19, 32, 20, 32, 25, 38, 23, 40, 28, 41, 28, 47, 31, 51, 34, 46, 40, 55, 35, 61, 44, 58, 41, 68

Offset

1,13

Links

Table of n, a(n) for n=1..71.

R. Zumkeller, Integer-sided triangles

Crossrefs

Cf. A070080, A070081, A070082, A070101, A051493, A005044, A070102, A024156, A070084, A070131.

Sequence in context: A357853 A336470 A351093 * A131085 A303280 A318717

Adjacent sequences: A070101 A070102 A070103 * A070105 A070106 A070107

Keyword

nonn

Author

Reinhard Zumkeller, May 05 2002

Status

approved