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A070135 Numbers n such that [A070080(n), A070081(n), A070082(n)] is an obtuse isosceles integer triangle with prime side lengths. 7

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

%S 5,14,133,163,472,542,714,907,1888,2064,2267,2466,3133,4240,4858,5188,

%T 7563,8469,9466,9958,11069,12841,13471,14876,17032,17794,20214,20268,

%U 21125,21943,22843,22933,23837,25767,25797

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

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

%e a(3)=133: [A070080(133), A070081(133), A070082(133)]=[7=7<11], A070085(133)=7^2+7^2-11^2=49+49-121=-23<0.

%Y Cf. A070108, A070111, A070127, A070115.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, May 05 2002

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)