1835005

Appears in sequences

• The number of edges on a piece of paper that has been folded n times (see comments for more precise definition).at n=36A133257
• a(n) = 7*2^n - 3.at n=18A156127
• Expansion of (1+4*x+5*x^2-x^3)/((1-x)*(1+x)*(1-2*x^2)).at n=37A220753