A051517 Triangles of perimeter 2n having integer sides and area.

0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 2, 0, 4, 0, 1, 2, 1, 0, 3, 2, 0, 4, 1, 0, 3, 0, 5, 1, 1, 2, 5, 0, 1, 1, 4, 0, 8, 0, 1, 5, 0, 0, 5, 6, 5, 0, 2, 0, 12, 1, 6, 1, 0, 0, 5, 0, 0, 4, 9, 1, 9, 0, 2, 0, 5, 0, 11, 0, 0, 8, 2, 3, 5, 0, 7, 12, 1, 0, 10, 1, 1, 1, 7, 0, 10, 3, 0, 2, 0, 2, 15, 0, 14, 5, 10, 0, 5, 0, 5, 11, 0, 0

Offset

1,16

Comments

No such triangles with odd perimeter exist.

Links

Table of n, a(n) for n=1..107.

Crossrefs

Sequence in context: A227311 A178515 A344874 * A289359 A356771 A053118

Adjacent sequences: A051514 A051515 A051516 * A051518 A051519 A051520

Keyword

nonn

Author

David W. Wilson

Status

approved