223606

Appears in sequences

• a(n) = floor(n^(1/2)*10^n).at n=4A093471
• Number of leg-hypotenuse twin Pythagorean triples < 10^n.at n=10A101904
• Integer part of Lorentz gamma factor = 1/sqrt(1 - (beta)^2) for beta = 0.9999...(with 9 appearing n times) = 1 - 10^(-n).at n=10A109999