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A181923 Nonprimes (A018252) mod 2. 0
1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

LINKS

Table of n, a(n) for n=1..121.

MATHEMATICA

With[{nn=200}, Mod[#, 2]&/@Complement[Range[nn], Prime[Range[ PrimePi[ nn]]]]] (* Harvey P. Dale, Apr 30 2014 *)

CROSSREFS

Sequence in context: A015777 A014017 A121262 * A290098 A102243 A173859

Adjacent sequences:  A181920 A181921 A181922 * A181924 A181925 A181926

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 02 2012

STATUS

approved

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Last modified February 17 23:35 EST 2020. Contains 332006 sequences. (Running on oeis4.)