1064448

Appears in sequences

• Shifts left when Dirichlet convolution (DC:(b,b)->a) applied 5 times.at n=5A144319
• Square array A(n,k), n>=1, k>=1, read by antidiagonals, with A(1,k)=1 and sequence a_k of column k shifts left when Dirichlet convolution (DC:(b,b)->a) applied k times.at n=50A144324
• a(n) is the smallest number m with exactly n divisors that are Zuckerman numbers, or -1 if there is no such m.at n=33A335038
• Integers whose number of divisors that are Zuckerman numbers sets a new record.at n=23A340638