0,1

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

P. Ribenboim, The Book of Prime Number Records. Springer-Verlag, NY, 2nd ed., 1989, p. 81.

Subsequence of A007013.

Sequence in context: A125956 A128071 A079622 this_sequence A156521 A012636 A006031

Adjacent sequences: A005841 A005842 A005843 this_sequence A005845 A005846 A005847

dead