4008636143

Appears in sequences

• Cellular automaton with Rule 230: 000, 001, 010, 011, ..., 111 -> 0,1,1,0,0,1,1,1.at n=31A006977
• a(0) = 0 and a(n) = (5*(-4)^n + 16*(-1)^n + 9*4^n)/240 for n >= 1.at n=18A113968
• a(0)=1, a(1)=2; for n>1, a(n)=3*a(n-1)+4*a(n-2)+5.at n=16A126019