153973

Appears in sequences

• Real parts of the recursive sequence a(n+2) = Sum_{k=0..n} binomial(n,k)*a(k)*a(n+1-k), with a(0)=1, a(1)=i.at n=11A289082
• Semiprimes k such that k+4, k+6, k+9, k+10 and k+14 are also semiprimes.at n=37A360666