1,1

Records are in A177932, their positions in A177931.

Table of n, a(n) for n=1..85.

a(n) = A020639( (A177929(n))^2 -1 ).

Cf. A001359, A177929, A174514, A174216, A174217

Sequence in context: A077862 A134061 A167221 * A242034 A205708 A309392

Adjacent sequences: A177927 A177928 A177929 * A177931 A177932 A177933

nonn

Vladimir Shevelev, May 15 2010

A 7 replaced by 17 and sequence extended by R. J. Mathar, May 31 2010

approved