71582788

Appears in sequences

• Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.at n=13A033114
• Expansion of 1/((1-2*x)*(1-x^4)).at n=26A083593
• a(n) = (A001317(2n)-1)/4.at n=14A089893
• Expansion of 1/((1+x)*(1-2*x)*(1+x^2)).at n=27A115451
• a(n) = floor(4^n/n).at n=14A129794
• a(n)=a(n-1)+a(n-2)+a(n-3)+2a(n-4).at n=30A139800
• a(n) = 4*(16^n-1)/15.at n=7A141032
• a(0)=0, a(1)=1, a(n) = least k>a(n-1) such that k+a(n-2) is a Jacobsthal number.at n=27A215095
• Numbers of the form (4^k - 4)/k.at n=10A247307
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 342", based on the 5-celled von Neumann neighborhood.at n=26A281216
• a(n) = floor(2^(n+1)/n).at n=29A281375
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 597", based on the 5-celled von Neumann neighborhood.at n=26A283216