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A051517 Triangles of perimeter 2n having integer sides and area. 0
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 (list; graph; refs; listen; history; text; internal format)
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: A102392 A227311 A178515 * A289359 A053118 A279228

Adjacent sequences:  A051514 A051515 A051516 * A051518 A051519 A051520

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified November 15 15:59 EST 2018. Contains 317239 sequences. (Running on oeis4.)