706225

Appears in sequences

• Square of main diagonal of 3-dimensional box with coprime integer sides and integer face diagonals.at n=3A023185
• RMS values of the Primitive RMS numbers: a(n) is the Root Mean Square of the divisors of A141813(n).at n=26A141814
• a(n) = n*(n+1)*(7*n^2 - n - 4)/4.at n=25A172077
• a(n) = (x(n)^2 + 1)/m(n), with m(n) = A002559(n) (Markoff numbers) and x(n)= A324601(n), for n >= 3. The Markoff uniqueness conjecture is assumed to be true.at n=51A309161
• G.f.: A(x,y) = Sum_{n>=0} x^n * ((1+x)^n + y)^n, where A(0) = 0, as a triangle of coefficients T(n,k) of x^n*y^k in A(x,y) = Sum_{n>=0} x^n * Sum_{k=0..n} T(n,k)*x^n*y^k, read by rows.at n=70A325580