A024158 Number of integer-sided triangles with sides a,b,c, a<b<c, a+b+c=n such that (c-b)(c-a)(b-a) divides (b+c-a)(c+a-b)(a+b-c).

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 2, 0, 0, 0, 2, 2, 0, 0, 6, 0, 0, 1, 3, 0, 4, 0, 8, 4, 0, 4, 4, 0, 0, 4, 12, 0, 6, 0, 5, 6, 0, 0, 30, 0, 0, 6, 6, 0, 3, 6, 18, 6, 0, 0, 23, 0, 0, 9, 26, 8, 10, 0, 8, 8, 12, 0, 25, 0, 0, 9, 9, 10, 12, 0, 58, 11, 0, 0, 34, 10, 0, 10, 30, 0, 18, 12, 11, 10, 0, 12, 80, 0, 1, 13, 0

Offset

1,15

Links

Table of n, a(n) for n=1..100.

Crossrefs

Sequence in context: A343630 A318584 A177338 * A054978 A129438 A125096

Adjacent sequences: A024155 A024156 A024157 * A024159 A024160 A024161

Keyword

nonn

Author

Clark Kimberling

Status

approved