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 A191607 Table of the difference of numerator and denominator of Farey sequences, read by rows. 1
 1, 0, 1, 1, 0, 1, 2, 1, 1, 0, 1, 3, 2, 1, 1, 1, 0, 1, 4, 3, 2, 3, 1, 2, 1, 1, 1, 0, 1, 5, 4, 3, 2, 3, 1, 2, 1, 1, 1, 1, 0, 1, 6, 5, 4, 3, 5, 2, 3, 4, 1, 3, 2, 1, 2, 1, 1, 1, 1, 0, 1, 7, 6, 5, 4, 3, 5, 2, 5, 3, 4, 1, 3, 2, 3, 1, 2, 1, 1, 1, 1, 1, 0, 1, 8, 7, 6, 5, 4, 7, 3, 5, 2, 5, 3, 4, 5, 1, 4, 3, 2, 3, 1, 2, 1, 2, 1, 1, 1, 1, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,7 COMMENTS For n>=1, the n-th row begins with 1, n-1 and ends with 1, 0. 1, 0 1, 1, 0 1, 2, 1, 1, 0 1, 3, 2, 1, 1, 1, 0 1, 4, 3, 2, 3, 1, 2, 1, 1, 1, 0 etc. Row n has A005728(n) terms. - Michel Marcus, Jun 27 2014 LINKS MATHEMATICA Farey[n_] := Union[ Flatten[ Join[{0}, Table[a/b, {b, n}, {a, b}]]]]; Table[ -Numerator@ Farey@ n + Denominator@ Farey@ n, {n, 9}] // Flatten CROSSREFS Cf. A133404. Sequence in context: A174295 A158511 A092921 * A029387 A070878 A228128 Adjacent sequences:  A191604 A191605 A191606 * A191608 A191609 A191610 KEYWORD easy,tabf,nonn AUTHOR Robert G. Wilson v, Jun 11 2011 STATUS approved

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Last modified April 22 15:47 EDT 2021. Contains 343177 sequences. (Running on oeis4.)