1922389

Appears in sequences

• Expansion of (1+x-x^3)/((1-2*x)*(1-x^2)).at n=20A052997
• a(n) = 4*a(n-1) + 1, a(1)=7.at n=9A072261
• a(n) = 4*a(n-2)+1 with initial terms 1,3,7.at n=20A283323
• a(0) = 4, a(n) = 2*a(n-1) + (-1)^n.at n=19A383953