374627

Appears in sequences

• Exponents m such that the decimal expansion of 4^m exhibits its first zero from the right later than any previous exponent.at n=23A239009
• Triangle read by rows: T(n,k) is the number of steps in constructing a tree f(n,k) where f(a,b) = f(f(a-1,b), f(a,b-1)), f(0,b) = f(b-1,b-1), f(a,0) = f(a-1,a-1), f(0,0) = 0; n >= 0, k = 0..n.at n=38A369792