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 A134452 Balanced ternary digital root of n. 7
 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1, 0, -1, 0, -1, 0, 1, 0, -1, 0, -1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS a(A005843(n))=0; a(A134453(n))=-1; a(A134454(n))=1; ABS(a(A005408(n)))=1; ABS(a(n)) = A000035(n)). REFERENCES D. E. Knuth, The Art of Computer Programming, Addison-Wesley, Reading, MA, Vol 2, pp 173-175. LINKS R. Zumkeller, Table of n, a(n) for n = 0..10000 Eric Weisstein's World of Mathematics, Digital Root Wikipedia, Balanced Ternary FORMULA a(n) = f(n) where f(n) = if n<-1 then f(-A065363(-n)) else (if n>1 then f(A065363(n)) else n). EXAMPLE 42 == '+---0' --> +1-1-2-1+0=-2 == '-+' --> -1+1=0; 43 == '+---+' --> +1-1-2-1+1=-1; CROSSREFS Cf. A134451. Sequence in context: A000035 A188510 A131734 * A327515 A327532 A073445 Adjacent sequences:  A134449 A134450 A134451 * A134453 A134454 A134455 KEYWORD sign,base AUTHOR Reinhard Zumkeller, Oct 27 2007 STATUS approved

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Last modified October 14 23:58 EDT 2019. Contains 328025 sequences. (Running on oeis4.)