2147418113

Appears in sequences

• a(n) = 2^(2n+1) - 2^(n+1) + 1.at n=15A092440
• a(n) = ceiling((2^n + 1 - 2*floor(2^(n/2)))/2).at n=31A129757
• Expansion of (1 + 4*x - 6*x^2 - 16*x^3 + 20*x^4)/((1-x)*(1-2*x)*(1+2*x)*(1-2*x^2)).at n=30A171663
• Numbers that are both Poulet and Proth.at n=13A242880
• a(2n) = A060867(n+1), a(2n+1) = A092440(n+1).at n=29A276918
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 779", based on the 5-celled von Neumann neighborhood.at n=30A290296