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 A235046 Characteristic function for A235033. 4
 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0 COMMENTS This is the characteristic function for A235033, cf. examples there. Cf. also the characteristic functions A236861 & A236862. LINKS Antti Karttunen, Table of n, a(n) for n = 0..8191 FORMULA a(n) = 0 iff A236380(n)=0, 1 otherwise. [This formula completely defines the sequence] Other observations, which partially describe the behavior of the sequence: For all x, y > 0, if either a(x) = 1 or a(y) = 1, then both a(x*y) = 1 and a(A048720(x,y)) = 1. If A010051(n)*A091247(n) = 1, then a(n) = 1. [n is in A091209] If A066247(n)*A091225(n) = 1, then a(n) = 1. [n is in A091214] PROG (Scheme) (define (A235046 n) (if (zero? (A236380 n)) 0 1)) CROSSREFS Characteristic function of A235033. Has zeros in the same positions as A236380. Cf. also A010051, A066247, A048720, A061858, A091209, A091214, A091225, A091247, A235043, A235044, A234741 & A234742, A236861 & A236862. Sequence in context: A215480 A143731 A079872 * A280046 A169672 A011672 Adjacent sequences:  A235043 A235044 A235045 * A235047 A235048 A235049 KEYWORD nonn AUTHOR Antti Karttunen, Jan 24 2014 STATUS approved

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Last modified December 9 07:21 EST 2021. Contains 349627 sequences. (Running on oeis4.)