603979775

Appears in sequences

• Expansion of (1+x^2-x^3)/((1-x)*(1-2*x)).at n=28A052996
• a(n) = 9*4^n - 1.at n=13A114569
• Decimal representation of the n-th iteration of the "Rule 125" elementary cellular automaton starting with a single ON (black) cell.at n=15A267360