1,7

Conjecture: If n is not of the form (5k+1)/2 then a(n) is not zero.

Cf. A083964.

Sequence in context: A033533 A097648 A023356 this_sequence A043641 A114385 A058042

Adjacent sequences: A083962 A083963 A083964 this_sequence A083966 A083967 A083968

base,more,nonn

Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), May 20 2003