A331258 Denominator of squared radius of inscribed circle of the n-th triangle with integer sides in the list given by A316841. Numerators are A331257.

12, 20, 3, 28, 28, 2, 4, 12, 5, 36, 5, 44, 3, 44, 44, 1, 52, 44, 3, 52, 7, 12, 52, 7, 52, 7, 4, 4, 52, 7, 20, 1, 68, 1, 60, 4, 2, 68, 20, 4, 68, 3, 76, 60, 4, 68, 9, 76, 5, 12, 68, 9, 68, 3, 76, 5, 68, 3, 76, 1, 4, 11, 68, 9, 76, 5, 84, 11, 92, 3, 76, 76, 1

Offset: 1

Author

Hugo Pfoertner, Jan 26 2020

Keywords

• nonn
• frac

Examples

			See A331257.
		

Crossrefs

Cf. A316841, A316843, A316844, A316845, A331257.

Programs

PARI

rh2(a,b,c)={my(s=(a+b+c)/2); (s-a)*(s-b)*(s-c)/s};
for(i=1,8, for(j=1,i, for(k=1,j, if(j+k>i, print1(denominator(rh2(i,j,k)),", ")))))