65441

Appears in sequences

• Semiprimes of the form (2^k - m)*(m*2^k - 1).at n=25A239038
• Integers k such that k^2 can be written as the sum of three positive fourth powers.at n=13A365657
• Primitive solutions k to k^2 = u^4 + v^4 + w^4, with u, v, w > 0.at n=3A365688
• a(n) = 2*n^3 - 3*n + 1.at n=32A377663