468937domain: NAppears in sequencesa(n) = round(n*phi^20), where phi is the golden ratio, A001622.at n=31A004955a(n) = ceiling(n*phi^20), where phi is the golden ratio, A001622.at n=31A004975Greatest integer k such that k/2^n < sqrt(1/5).at n=20A293334The integer k that minimizes |k/2^n - sqrt(1/5)|.at n=20A293336