219375

Appears in sequences

• Numbers k such that k and k+1 have the same sum of non-unitary divisors (A048146), for A048146(k) > 0.at n=9A064115
• a(n) = A200656(n)^3 - A200657(n)^2.at n=3A200658
• a(n) = (A201225(n))^3 - (A201226(n))^2.at n=0A201227
• Distances d=x^3-y^2 for primary extremal points {x,y} of Mordell elliptic curves with quadratic extensions over rationals.at n=3A201268
• Smallest d such that Mordell's elliptic curve x^3-y^2=d (for positive d) has an integral point in the quadratic extension sqrt(A202057(n)).at n=1A202056
• a(n) = 4*n^3 - 3*n + 1.at n=38A280089
• a(0) = a(1) = 1; a(n) = 5 * Sum_{k=0..n-2} a(k) * a(n-k-2).at n=10A354736