%I #4 Jan 19 2020 20:41:00
%S 1,2,2,3,3,3,3,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,
%T 7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,7,8,8,7,8,7,8,8,8,8,8,8,8,8,8,9,
%U 9,9,9,9,9,9,9,9,9,9,9,8,9,9,9,8,9,9,9
%N Triangles with integer sides i <= j <= k sorted by radius of circumcircle, and, in case of ties, lexicographically by side lengths (smallest first). The sequence gives the longest side k. The other sides are in A331254 and A331255.
%e See A331254.
%Y Cf. A331227, A331228 (squared radius of circumcircle), A331254 (shortest side), A331255 (middle side).
%K nonn
%O 1,2
%A _Hugo Pfoertner_, Jan 19 2020