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 A163300 Zero together with the even nonprimes. 20
 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 A163300 U A014076 = A141468. 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 G. C. Greubel, Table of n, a(n) for n = 1..1000 FORMULA a(n) = 2*A087156(n). a(n) = 2*{n-1+[(n+1) mod n]}, with n>=1. - Paolo P. Lava, Nov 06 2009 MATHEMATICA Drop[Range[0, 132, 2], {2}] (* Harvey P. Dale, May 05 2012 *) CROSSREFS Cf. A014076, A141468, A018252. Sequence in context: A063127 A272651 A103517 * A193175 A093161 A307782 Adjacent sequences:  A163297 A163298 A163299 * A163301 A163302 A163303 KEYWORD nonn,easy AUTHOR Juri-Stepan Gerasimov, Jul 26 2009 EXTENSIONS Better definition from Omar E. Pol, Aug 04 2009 STATUS approved

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Last modified October 22 22:34 EDT 2019. Contains 328335 sequences. (Running on oeis4.)