1000080

Appears in sequences

• G.f. A(x) satisfies A(x) = 1 + x*A(2*x)^5.at n=5A171204
• Number x = concat(MSD(x),b) such that MSD(x)*b = d(x), where MSD(x) is the Most Significant Digit of x and d(x) is the number of divisors of x.at n=19A291618