43767

Appears in sequences

• Numbers k such that k and k+1 are both of the form p*q^3 where p and q are distinct primes.at n=33A215173
• Number of (3+2) X (n+2) 0..4 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=13A252964
• Odd numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.at n=38A387159