36811

Appears in sequences

• a(1) = 1; for n > 1, a(n) is the least k > a(n-1) such that a(n) + a(n-1) is square and a(n) - a(n-1) is prime.at n=29A108972
• 1 + 12*n + 81*n^3 + n*(105*n + 81*n^3)/2.at n=5A134163
• Number of n X 5 0..1 arrays with rows and antidiagonals unimodal and columns nondecreasing.at n=10A224143
• Composite numbers for which the root mean square of proper divisors is an integer.at n=31A247135