1073676289

Appears in sequences

• a(n) = (2^n - 1)^2.at n=14A060867
• Expansion of (1 + 2*x^2)/((1 + x)*(1 - 2*x)*(1 - 2*x^2)).at n=29A085903
• Smallest square k == 1 (mod some n-th power), k > 1.at n=15A088037
• a(2*n) = -(2^(2*n+1) + 1), a(2*n+1) = (2^(n+1) - (-1)^n)^2.at n=29A105951
• a(n) = 1+4^(n+1)-4*(-2)^n.at n=14A171590
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 5", based on the 5-celled von Neumann neighborhood.at n=14A270007
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 73", based on the 5-celled von Neumann neighborhood.at n=14A270088
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 89", based on the 5-celled von Neumann neighborhood.at n=14A270130
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 659", based on the 5-celled von Neumann neighborhood.at n=14A273385
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 913", based on the 5-celled von Neumann neighborhood.at n=14A273767
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 969", based on the 5-celled von Neumann neighborhood.at n=14A273848
• Number of holes in a sheet of paper when you fold it n times and cut off the four corners.at n=30A274230
• a(2n) = A060867(n+1), a(2n+1) = A092440(n+1).at n=28A276918
• a(n) is the largest perfect power < 2^n.at n=27A357752
• a(n) is the largest square with n binary digits.at n=27A357754