-3145728

Appears in sequences

• Expansion of (1-x)/(1+2*x+2*x^2).at n=41A078069
• List of quadruples: 2*(-4)^n, -3*(-4)^n, 2*(-4^n), 2*(-4)^n, n >= 0.at n=41A134142
• a(n) = b(n+1)-2b(n) where b() is A134812.at n=41A134813
• First differences of A138380. Second differences of A138377.at n=41A138382
• a(n)=(5-(-1)^n-6*n)*2^(n-2).at n=17A179609
• Expansion of Product_{k>0} (1 - 2^(k-1)*x^k).at n=26A337299