A298614 Number of primitive Heronian triangles with perimeter A096468(n).

1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 2, 3, 1, 1, 3, 1, 1, 2, 1, 1, 1, 2, 5, 3, 1, 6, 3, 2, 5, 1, 4, 1, 1, 1, 4, 1, 6, 1, 3, 4, 5, 1, 3, 3, 2, 8, 1, 1, 1, 1, 1, 5, 1, 3, 2, 2, 7, 8, 3, 4, 3, 2, 6, 3, 3, 1, 5, 4, 3, 1, 5, 1, 2, 6, 16, 1, 9, 4, 9, 1, 3, 2, 3, 1, 4

Offset

1,6

Comments

A Heronian triangle is a triangle with integer sides and area.

Links

Peter Kagey, Table of n, a(n) for n = 1..5000

Sascha Kurz, Lists of primitive Heronian triples, Bayreuth University.

Formula

a(n) = A070138(A096468(n)).

Crossrefs

This is A070138 with the zeros omitted.

Cf. A096468.

Sequence in context: A029380 A298485 A332997 * A108129 A078349 A266476

Adjacent sequences: A298611 A298612 A298613 * A298615 A298616 A298617

Keyword

nonn

Author

Peter Kagey, Jan 26 2018

Status

approved