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A172048
a(n) = A104275(n) + A014076(n).
1
2, 14, 23, 32, 38, 41, 50, 53, 59, 68, 74, 77, 83, 86, 95, 98, 104, 113, 116, 122, 128, 131, 137, 140, 143, 149, 158, 167, 173, 176, 179, 182, 185, 188, 194, 200, 203, 212, 215, 218, 221, 230, 233, 239, 242, 248, 254, 257, 263, 266, 275, 278, 281, 284, 293
OFFSET
1,1
COMMENTS
Alternatively: the sequence of the numbers 3*k-1 for all nonprime 2*k-1, k >= 1.
LINKS
MATHEMATICA
Flatten[Table[If[PrimeQ[2*n - 1], {}, 3*n - 1], {n, 1, 100}]]
CROSSREFS
Sequence in context: A116639 A220274 A036433 * A226334 A109255 A285990
KEYWORD
nonn,easy,less
AUTHOR
Roger L. Bagula, Jan 24 2010
EXTENSIONS
The two equivalent definitions separated by the Assoc. Editors of the OEIS, Feb 02 2010
STATUS
approved