1,1

Is there an n for which A006694((a(n)-1)/2) is not equal to 4 ?

Cf. A064287, A006694, A001122.

Sequence in context: A086096 A055131 A121051 this_sequence A020142 A146696 A126950

Adjacent sequences: A139039 A139040 A139041 this_sequence A139043 A139044 A139045

nonn

Vladimir Shevelev (shevelev(AT)bgu.ac.il), Jun 01 2008