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Numbers n such that [A070080(n), A070081(n), A070082(n)] is an obtuse isosceles integer triangle with relatively prime side lengths.
7

%I #7 Mar 30 2012 18:50:20

%S 5,14,32,52,61,104,118,133,146,163,202,242,246,266,314,342,404,437,

%T 467,472,504,542,547,577,619,625,714,757,801,807,853,907,957,1015,

%U 1022,1082,1139,1145,1265,1278,1335,1414,1475

%N Numbers n such that [A070080(n), A070081(n), A070082(n)] is an obtuse isosceles integer triangle with relatively prime side lengths.

%H R. Zumkeller, <a href="/A070080/a070080.txt">Integer-sided triangles</a>

%e a(5)=61: [A070080(61), A070081(61), A070082(61)]=[5=5<9], A070084(69)=gcd(5,5,9)=1, A070085(61)=5^2+5^2-9^2=25+25-81=-31<0.

%Y Cf. A070107, A070110, A070127, A070115.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, May 05 2002