341530

Appears in sequences

• Number of positive integers <= 2^n of form 3 x^2 + 6 y^2.at n=22A054163
• Weight distribution of [42,21,10] binary extended quadratic-residue (or QR) code.at n=9A145648
• Weight distribution of [42,21,10] binary extended quadratic-residue (or QR) code.at n=12A145648
• Smallest m, such that there are exactly n solutions of the equation (m+k)' = m' + k', where 1 <= k <= 2*m and x' = A003415(x), the arithmetic derivative of x.at n=23A258138