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 A176729 Denominator of z-sequence for Sheffer triangle A060081. 4
 1, 2, 1, 4, 1, 6, 1, 24, 1, 10, 1, 12, 1, 210, 1, 48, 1, 90, 1, 420, 1, 330, 1, 360, 1, 1638, 1, 28, 1, 30, 1, 7392, 1, 510, 1, 36, 1, 51870, 1, 840, 1, 6930, 1, 13860, 1, 4830, 1, 1008, 1, 99450, 1, 5148, 1, 2970, 1, 3192, 1, 870, 1, 180, 1, 2792790, 1, 137280, 1, 1530, 1, 5796 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The numerator sequence is A176728. LINKS W. Lang: Rationals A176728/A176729 . FORMULA E.g.f. for rationals A176728/A176729: (1-sqrt(1- x^2))/ln(sqrt((1+x)/(1-x))). For n=0 one has a(0)=1, hence A176728(0)/a(0)=0. EXAMPLE Rationals A176728/A176729 with offset 0: [0,1/2,0,-1/4,0,-17/6,0,-1955/24,0,-44089/10,0,-4627969/12,... ]. CROSSREFS A176726/A176727 a-sequence for triangle A060081. Sequence in context: A147365 A147064 A147228 * A074643 A060794 A074919 Adjacent sequences:  A176726 A176727 A176728 * A176730 A176731 A176732 KEYWORD nonn,easy,frac AUTHOR Wolfdieter Lang, Jul 14 2010 STATUS approved

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