27725

Appears in sequences

• a(n) = floor(10000*log(n)).at n=15A004243
• dot_product(n,n-1,...2,1)*(6,7,...,n,1,2,3,4,5).at n=44A026063
• Numbers k such that k and k^2 use only the digits 2, 5, 6, 7 and 8.at n=28A137111
• Expansion of -(x * sqrt(5*x^2 -6*x +1) -2*x^3 +3*x^2 -x) / ((3*x^2 -4*x +1) * sqrt(5*x^2 -6*x +1) +5*x^3 -11*x^2 +7*x -1).at n=7A239201
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 213", based on the 5-celled von Neumann neighborhood.at n=34A270903
• a(n) = Sum_{k=0..n} ceiling((1 + sqrt(2))^k).at n=11A279101