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A331368
Number of primitive Heronian triangles with mutually distinct side lengths and perimeter A331367(n).
0
1, 1, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 5, 3, 1, 3, 1, 2, 5, 1, 4, 1, 1, 1, 4, 1, 6, 1, 3, 2, 5, 1, 3, 3, 2, 5, 1, 1, 1, 1, 1, 5, 1, 3, 2, 2, 7, 5, 3, 4, 3, 2, 6, 3, 3, 1, 5, 4, 3, 1, 5, 1, 2, 6, 11, 1, 9, 4, 5, 1, 3, 2, 3, 1, 4, 2, 1, 4, 4, 2, 1, 13, 2, 8, 2, 7
OFFSET
1,6
LINKS
Eric Weisstein's World of Mathematics, Heronian Triangle
Wikipedia, Integer Triangle
EXAMPLE
a(1) = 1; there is one primitive Heronian triangle with perimeter A331367(1) = 12 whose side lengths are mutually distinct, [3,4,5].
a(2) = 1; there is one primitive Heronian triangle with perimeter A331367(2) = 30 whose side lengths are mutually distinct, [5,12,13].
CROSSREFS
Sequence in context: A248156 A352780 A375706 * A106177 A211985 A211009
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, May 07 2020
STATUS
approved