38987

Appears in sequences

• Semiprimes that are the sum of the first n semiprimes for some n.at n=38A092190
• a(n) = a(n-1) - (n-4)*a(n-4), with a(0)=0, a(1)=1, a(2)=2, a(3)=1.at n=20A122049
• Expansion of (1+x)/(1+x-2*x^2-3*x^3).at n=26A250103