42597

Appears in sequences

• Numbers k such that [A070080(k), A070081(k), A070082(k)] is a right integer triangle with relatively prime side lengths.at n=12A070137
• Positive integers n that are palindromic in base 2 and whose binary representation has the same number of 0's as 1's.at n=26A143905
• a(n) = 4*n^3 + 5.at n=23A243762
• Odd composites k such that sigma(k) has the same powerful part as k, where sigma is the sum of divisors function.at n=35A386425