-2513

Appears in sequences

• Expansion of (1+x)^2/((1+x)^2+x^3).at n=17A099529
• G.f.: Product_{k>=1} 1/(1+prime(k)*x^prime(k)).at n=21A298160
• a(n) = numerator(n!*[z^n](z*(exp(z)+2*exp(-(1/2)*z)*cos((1/2)*z* 3^(1/2)))/(1-exp(-z)))).at n=14A306148