617216

Appears in sequences

• Integers k such that k + phi(k) + phi(phi(k)) is a fourth power.at n=28A116041
• a(n) = coefficient of x^n in the power series A(x) such that: 0 = Sum_{n=-oo..+oo, n<>0} n * x^n * (1 - x^n)^(n-1) * A(x)^n, starting with a(0) = -1.at n=16A357159
• a(n) = sum of all distinct multiplicities in every integer partition of n.at n=42A373273