175232

Appears in sequences

• a(n) is the least number x such that gcd(sigma(x), sigma(x+1)) = n.at n=16A084307
• Numbers with prime signature {7,2}, i.e., of form p^7*q^2 with p and q distinct primes.at n=13A179689
• Number of (n+2) X 4 0..1 arrays with no 3 X 3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=3A204392
• Number of (n+2)X6 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=1A204394
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=11A204398
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=13A204398
• Numbers whose sum of squarefree divisors and sum of nonsquarefree divisors are both squarefree numbers.at n=28A300984