281216

Appears in sequences

• Numbers of the form p^7*q^3 where p and q are distinct primes.at n=6A179705
• a(n) = floor(1/{(2+n^4)^(1/4)}), where {} = fractional part.at n=52A184537
• Permutation of natural numbers: a(n) = A270436(A007305(n+1)) * A270437(A047679(n-1)).at n=41A273671
• Numbers whose prime factors are 2 and 13.at n=33A288162
• Numbers whose sum of squarefree divisors and sum of nonsquarefree divisors are both squarefree numbers.at n=35A300984
• a(n) = Product_{d|n} (tau(d)*pod(d)) where tau(k) = the number of divisors of k (A000005) and pod(k) = the product of the divisors of k (A007955).at n=25A307101
• Consider primitive pairs of integers (b, c) with b < 0 such that x^5 + b*x + c = 0 is irreducible and solvable by radicals: sequence gives values of c.at n=23A371558
• Positive numbers k such that 2*k^k is a cube.at n=31A376315