193063

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and w<x*y*z.at n=21A212057
• a(1) = 1; if a(n) is not divisible by 3, a(n+1) = 4*a(n) + 1, otherwise a(n+1) = a(n)/3.at n=39A346035