OFFSET
1,1
COMMENTS
The NAME was corrected by a proposal of Wolfdieter Lang. - Ralf Steiner, Sep 29 2019
The corresponding perimeters are given in A024364. - Wolfdieter Lang, Oct 06 2014
Note that the multiplicity of primitive Pythagorean triples (increasingly ordered) with perimeter P is not always 1. See A024408 for P numbers with multiplicity k >= 2, and the first example with k = 2 for P = 1716. - Wolfdieter Lang, Sep 24 2019
LINKS
Jean-François Alcover, Table of n, a(n) for n = 1..3975
Ron Knott, The Pythagorean triples.
Michael Penn, Number Theory | Primitive Pythagorean Triples, Youtube video, 2019.
MATHEMATICA
SortBy[Select[Partition[A103605, 3], GCD @@ # == 1&], {#[[1]] + #[[2]] + #[[3]]&, If[EvenQ[#[[1]]], #[[1]], #[[2]]]&}] // Flatten (* Jean-François Alcover, May 26 2020 *)
CROSSREFS
KEYWORD
easy,nonn,tabf
AUTHOR
Alexandre Wajnberg, Mar 24 2005
EXTENSIONS
Corrected at the suggestion of Ralf Steiner by Wolfdieter Lang, Sep 24 2019
Errors in b-file noticed by Kevin Ryde corrected by Jean-François Alcover, May 26 2020
STATUS
approved