1,1

All terms shown have exactly 3 distinct prime factors. a(101) = 2940 =2^2*3*5*7^2 is the first member with more than 3. a(107) = 3072 = 2^10*3 is the first member with less than 3.

Table of n, a(n) for n=1..48.

90 = 2^1*3^2*5^1 is a member because the concatenation of the exponents is 121.

Sequence in context: A025362 A114826 A253385 * A249553 A125010 A241004

Adjacent sequences: A103650 A103651 A103652 * A103654 A103655 A103656

base,easy,nonn,less

David Wasserman, Feb 11 2005

approved