122512

Appears in sequences

• [ (3rd elementary symmetric function of 3,4,...,n+4)/(3+4+...+n+4) ].at n=37A024191
• Long leg B of primitive Pythagorean triangles such that perimeters are Averages of twin prime pairs, q=p+1, a=q^2-p^2, c=q^2+p^2, b=2*p*q, s=a+b+c, s-+1 are primes.at n=22A155174
• a(n) = n*(n+1)*(13*n+2)/6.at n=38A257093
• Numbers n such that n^2+k-1 is the sum of two nonzero squares in exactly k ways for all k = 1, 2, 3.at n=10A273341
• Number of ways to partition the set of vertices of a convex {n+8}-gon into 3 non-intersecting polygons.at n=31A350116