1,2

Hans Havermann found term a(5).

Jack Brennen says that there are no other terms < 2^32.

a(6) > 2^80 if it exists. - Bert Dobbelaere, Apr 19 2019

Table of n, a(n) for n=1..5.

12 in binary is 1100. And 12 = 4^1 * 3^1 * 2^0 * 1^0. So 12 is in the sequence.

Sequence in context: A089415 A282974 A181063 * A226603 A116534 A130533

Adjacent sequences: A161321 A161322 A161323 * A161325 A161326 A161327

base,more,nonn

Leroy Quet, Jun 07 2009

approved