723030

Appears in sequences

• Unitary barely 3-abundant: numbers m such that 3 < usigma(m)/m < usigma(k)/k for all numbers k < m, where usigma is the sum of unitary divisors function (A034448).at n=15A336671
• G.f. A(x) satisfies: A(x)^2 = A( (x + 4*A(x)^2)^2 ).at n=6A386667