A107487 - OEIS

%I #7 Sep 07 2022 11:44:25

%S 6,12,15,18,20,24,28,30,30,35,36,40,42,42,45,45,48,54,56,60,60,60,63,

%T 66,66,70,72,72,75,77,78,80,84,84,84,88,90,90,90,91,96,99,100,102,104,

%U 105,105,108,110,112,114,117,120,120,120,120,126,126

%N Ordered semiperimeters of Pythagorean triangles.

%C For ordered semiperimeters of primitive Pythagorean triangles, see A020886.

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Integer_triangle">Integer Triangle</a>

%F a(n) = A009096(n)/2.

%Y Cf. A005279, A009096, A020886.

%K nonn

%O 1,1

%A _Lekraj Beedassy_, May 28 2005