329728

Appears in sequences

• Numbers n such that n+cototient(n) is a power of 2.at n=33A053159
• Nonprimes n such that n+cototient(n) is a power of 2.at n=27A053162
• Hankel transform of A128057.at n=11A128056
• a(n) = ((3+sqrt(5))*(1+sqrt(5))^n + (3-sqrt(5))*(1-sqrt(5))^n)/2.at n=10A163062
• G.f. satisfies: A(x) = 1/A(-x*A(x)).at n=14A214761
• Numerators of a sequence defined by a modified recurrence for the exponential of the von Mangoldt function.at n=45A277439