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A163300 Zero together with the even nonprimes. 22
0, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
The nonprime numbers (A018252) begin: 1,4,6,8,9,10,12,14,15,... So the words "prime" and "nonprime" normally refer to the natural numbers or positive integers: 1,2,3,4,5,6,... (Zero is not a member of A018252. See also the definition of A141468). - Omar E. Pol, Aug 04 2009
LINKS
FORMULA
a(n) = 2*A087156(n).
MATHEMATICA
Drop[Range[0, 132, 2], {2}] (* Harvey P. Dale, May 05 2012 *)
CROSSREFS
Sequence in context: A063127 A272651 A103517 * A193175 A093161 A307782
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
Better definition from Omar E. Pol, Aug 04 2009
STATUS
approved

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Last modified March 28 11:46 EDT 2024. Contains 371241 sequences. (Running on oeis4.)