1,2
Conjecture: If n is not of the type (5k+1)/2 then a(n) is not zero.
Table of n, a(n) for n=1..10.
Cf. A083965.
Sequence in context: A061507 A046497 A061512 * A131628 A079091 A191749
Adjacent sequences: A083961 A083962 A083963 * A083965 A083966 A083967
base,more,nonn
Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), May 20 2003
approved