30511

Appears in sequences

• Numbers which do not reach zero under either of the iterations: x -> floor(sqrt(x)) * (x - floor(sqrt(x))^2) or y -> ceiling(sqrt(y)) * (ceiling(sqrt(y))^2 - y).at n=36A219963
• Number of triples 0 <= i, j, k < n such that bitwise AND of i, j, k is 0.at n=36A269589
• a(n) = n*(1-3n+2*n^2+2*n^3)/2.at n=13A277977