A171508 Numbers that are not the sum of the k-th noncomposite number and k for any k >= 1.

1, 3, 5, 7, 8, 10, 11, 13, 14, 15, 16, 18, 19, 21, 22, 23, 24, 26, 27, 29, 30, 31, 32, 34, 35, 36, 37, 38, 39, 41, 42, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 56, 57, 59, 60, 61, 62, 64, 65, 66

Offset

1,2

Links

Table of n, a(n) for n=1..50.

Mathematica

With[{nn=20}, Complement[Range[Prime[nn-1]], Total/@Thread[ {Join[{1}, Prime[ Range[nn-1]]], Range[nn]}]]] (* Harvey P. Dale, Nov 25 2012 *)

Crossrefs

Cf. A090178, A008578.

Sequence in context: A189829 A175146 A351076 * A049068 A185602 A225554

Adjacent sequences: A171505 A171506 A171507 * A171509 A171510 A171511

Keyword

nonn

Author

Jaroslav Krizek, Dec 10 2009

Extensions

Edited by N. J. A. Sloane, Dec 19 2009

Status

approved