A070124 - OEIS

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

%S 1,2,3,4,6,7,9,10,11,12,15,16,18,19,22,23,24,27,28,31,34,35,38,39,40,

%T 43,46,47,48,51,54,55,58,63,64,65,68,71,72,73,76,81,84,85,88,93,94,95,

%U 98,103,107,108,109,112,117,120,121,124,129

%N Numbers n such that [A070080(n), A070081(n), A070082(n)] is an acute isosceles integer triangle.

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

%e a(13)=18: [A070080(18), A070081(18), A070082(18)]=[4=4=4], A070085(18)=4^2+4^2-4^2=16>0.

%Y Cf. A070098, A070126, A070125, A070115, A070118.

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, May 05 2002