1,2

A118952(a(n)) = 0, complement of A118957;

A118954 is a subsequence.

Table of n, a(n) for n=1..70.

nn=15; Complement[Range[nn^2], Flatten[Table[c=2^n; c+Prime[ Range[ PrimePi[ c]]], {n, 2, nn}]]] (* Harvey P. Dale, Sep 14 2012 *)

Sequence in context: A242175 A325662 A275771 * A109850 A008749 A029000

Adjacent sequences: A118953 A118954 A118955 * A118957 A118958 A118959

nonn

Reinhard Zumkeller, May 07 2006

approved