318181

Properties

Appears in sequences

• a(n) = Sum_{i=0..n} binomial(n,i)^2*i!*4^i.at n=5A102773
• Square-loop primes.at n=21A108660
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = Sum_{j=0..n} k^j * j! * binomial(n,j)^2.at n=50A341014
• Smallest prime that is the sum of 2n+1 squares of consecutive odd primes, or 0 if no such prime exists.at n=17A380319
• Prime numbersat n=27453