A334590 Number of nonprimitive Heronian triangles with perimeter A334589(n).

1, 1, 2, 2, 1, 2, 2, 4, 2, 3, 1, 2, 4, 2, 7, 2, 4, 3, 5, 3, 1, 2, 7, 3, 1, 2, 5, 4, 9, 2, 9, 8, 6, 2, 6, 2, 3, 5, 13, 2, 7, 3, 2, 9, 2, 12, 9, 1, 9, 8, 3, 1, 7, 13, 8, 13, 3, 1, 4, 7, 10, 20, 1, 3, 16, 2, 2, 1, 2, 4, 8, 13, 3, 1, 3, 7, 3, 19, 3, 15, 15, 13, 6, 1, 6, 21, 22, 6, 2, 15, 12

Offset

1,3

Links

Table of n, a(n) for n=1..91.

Eric Weisstein's World of Mathematics, Heronian Triangle

Wikipedia, Heronian triangle

Wikipedia, Integer Triangle

Example

a(1) = 1; there is one nonprimitive Heronian triangle with a perimeter of A334589(1) = 24, which is [6,8,10].
a(2) = 1; there is one nonprimitive Heronian triangle with a perimeter of A334589(2) = 32, which is [10,10,12].

Crossrefs

Cf. A051518, A096468, A334589.

Sequence in context: A071457 A227782 A255771 * A115034 A253193 A027869

Adjacent sequences: A334587 A334588 A334589 * A334591 A334592 A334593

Keyword

nonn

Author

Wesley Ivan Hurt, May 06 2020

Status

approved