72076

Appears in sequences

• Numbers k such that k-th and (k+1)-st term of A038593 differ by 5.at n=27A038636
• Composite n such that (n-1)*phi(n) is a perfect square.at n=37A069953
• Triangle T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = x + 2.at n=46A256890
• Triangle T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = x + 2.at n=53A256890