A119911 Natural numbers with number of divisors not equal to a Lucas number.

12, 16, 18, 20, 24, 28, 30, 32, 36, 40, 42, 44, 45, 48, 50, 52, 54, 56, 60, 63, 66, 68, 70, 72, 75, 76, 78, 80, 81, 84, 88, 90, 92, 96, 98, 99, 100, 102, 104, 105, 108, 110, 112, 114, 116, 117, 120, 124, 126, 128, 130, 132, 135, 136, 138, 140, 144, 147, 148

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Mathematica

With[{lnos=LucasL[Range[0, 20]]}, Select[Range[300], !MemberQ[ lnos, DivisorSigma[ 0, #]]&]] (* Harvey P. Dale, May 11 2014 *)

Crossrefs

Cf. A000032.

Complement to A119885.

Sequence in context: A189685 A126763 A058080 * A272861 A192690 A064499

Adjacent sequences: A119908 A119909 A119910 * A119912 A119913 A119914

Keyword

easy,nonn

Author

Giovanni Teofilatto, Aug 02 2006

Extensions

More terms from Harvey P. Dale, May 11 2014

Status

approved