1,1

(p,q) = 1,. p = A066657(n) and q = A066658(n). a(n) = 2^p*3^q.

The fact that rational numbers are countable directly follows from the 'unique factorization theorem'.

Cf. A066657, A066658, A076940.

Sequence in context: A015645 A001216 A079843 this_sequence A006779 A003208 A002933

Adjacent sequences: A076938 A076939 A076940 this_sequence A076942 A076943 A076944

more,nonn

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 19 2002