520093696

Appears in sequences

• First differences of A045623.at n=27A045891
• Denominators of coefficients of 1/2^(2n+1) in Newton's series for Pi.at n=15A054388
• Number of subsets of {1,.., n} containing at least one square.at n=28A089888
• Number of 3 X 3 0..n arrays with every element equal to a diagonal or antidiagonal reflection.at n=14A209594
• a(1) = 1, a(2) = 2, a(3) = 5, a(4) = 8 and a(5) = 15, a(n) = Sum_{j=1..n-1} a(j).at n=29A257548
• Decimal representation of the n-th iteration of the "Rule 91" elementary cellular automaton starting with a single ON (black) cell.at n=26A267042
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 157", based on the 5-celled von Neumann neighborhood.at n=28A286119
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 181", based on the 5-celled von Neumann neighborhood.at n=30A286406