50140

Appears in sequences

• Expansion of 1 / ((1+x) * (1-5*x+x^2)).at n=7A099025
• G.f. satisfies: A(x) = Product_{n>=0} (1 + x^(n+1)*A(x)^(2*n))/(1 - x^(n+1)*A(x)^(2*n)).at n=8A192623
• Numbers k such that k, k+1 and k+2 have exactly 4 distinct prime factors.at n=3A364309