83346

Appears in sequences

• Number x = concat(MSD(x),b) such that MSD(x)*b = phi(x), where MSD(x) is the Most Significant Digit of x and phi(x) is the Euler totient function of x.at n=36A286130
• Expansion of (1/x) * Series_Reversion( x * (1 - x^3 / (1 - x)^4) ).at n=13A389350