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 A219093 Denominator of the least reduced fraction b/c > 1 using divisors b and c of n. 4
 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 2, 1, 4, 3, 1, 1, 3, 1, 1, 1, 4, 1, 5, 1, 1, 1, 1, 5, 3, 1, 1, 1, 4, 1, 6, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 2, 5, 7, 1, 1, 1, 5, 1, 1, 7, 1, 5, 2, 1, 1, 1, 5, 1, 8, 1, 1, 3, 1, 7, 2, 1, 4, 1, 1, 1, 6, 5, 1, 1, 8 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,5 COMMENTS The product b*c divides n. LINKS Clark Kimberling, Table of n, a(n) for n = 2..10000 EXAMPLE For n = 2,...,12, the fractions are 2/1, 3/1, 2/1, 5/1, 3/2, 7/1, 2/1, 3/1, 2/1, 11/1, 4/3, so that A218993 = (2, 3, 2, 5, 3, 7, 2, 3, 2, 11, 4, ... ); A219093 = (1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 3, ... ); A219094 = (1, 1, 2, 1, 1, 1, 4, 3, 5, 1, 1, ... ); A219095 = (6, 12, 15, 18, 20, 21, 24, 28, 30, 35, 36, ... ). MATHEMATICA (See A218993.) CROSSREFS Cf. A218993, A219094, A219095. Sequence in context: A259396 A328672 A325355 * A062760 A323163 A322318 Adjacent sequences:  A219090 A219091 A219092 * A219094 A219095 A219096 KEYWORD nonn,easy AUTHOR Clark Kimberling, Feb 06 2013 STATUS approved

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Last modified August 4 06:02 EDT 2021. Contains 346442 sequences. (Running on oeis4.)