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A039503
Odd numbers from A039500.
1
1, 3, 11, 15, 29, 39, 43, 53, 57, 59, 65, 69, 71, 77, 79, 85, 87, 95, 97, 101, 103, 105, 113, 115, 127, 129, 135, 137, 141, 145, 151, 155, 157, 169, 171, 173, 183, 189, 193, 201, 205, 207, 211, 217, 227, 231, 235, 245, 249, 253, 259, 269, 273, 275, 283, 289
OFFSET
1,2
MATHEMATICA
colln[n_]:= NestWhile[If[EvenQ[#], #/2, 3#-1] &, n, FreeQ[{1, 5, 17}, #] &]; Select[Range[1, 289, 2], colln[#] == 1 &] (* Jayanta Basu, Jun 06 2013 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Christian G. Bower, Feb 15 1999
STATUS
approved