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 A156277 Numbers appearing at every third row in the third column of A156241. 1
 1, -1, 0, 0, -1, 0, -1, 0, 0, 1, -1, 0, -1, 1, 0, 0, -1, 0, -1, 0, 0, 1, -1, 0, 0, 1, 0, 0, -1, 0, -1, 0, 0, 1, 1, 0, -1, 1, 0, 0, -1, 0, -1, 0, 0, 1, -1, 0, 0, 0, 0, 0, -1, 0, 1, 0, 0, 1, -1, 0, -1, 1, 0, 0, 1, 0, -1, 0, 0, -1, -1, 0, -1, 1, 0, 0, 1, 0, -1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The Dirichlet inverse is A011655, and the Mobius inverse is represented by the absolute values of A154271. - R. J. Mathar, Jul 02 2013 LINKS FORMULA a(n) = -A008683(3n). - R. J. Mathar, Mar 31 2011 MAPLE seq( -numtheory[mobius](3*n), n=1..80) ; # R. J. Mathar, Mar 31 2011 CROSSREFS Sequence in context: A341754 A074711 A004585 * A319448 A260595 A328102 Adjacent sequences:  A156274 A156275 A156276 * A156278 A156279 A156280 KEYWORD easy,sign,mult AUTHOR Mats Granvik, Feb 07 2009 STATUS approved

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Last modified May 16 03:46 EDT 2021. Contains 343937 sequences. (Running on oeis4.)