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%I #10 Aug 29 2019 17:21:22
%S 1,0,-1,0,-17,0,-1955,0,-44089,0,-4627969,0,-10431967727,0,
%T -424734574531,0,-187497600357613,0,-263146180762981877,0,
%U -77335840394370605087,0,-38414950218116664660463,0,-95193934978797641162562791,0,-1044549307308161782597280065,0,-836232289988098415162220532417
%N Numerator of z-sequence for Sheffer triangle A060081.
%C The denominator sequence is A176729.
%C For a- and z-sequences for Sheffer triangles see the W. Lang link under A006232.
%H W. Lang: <a href="/A176728/a176728.txt">Rationals A176728/A176729. </a>
%F E.g.f. for rationals A176728/A176729: (1-sqrt(1-x^2))/log(sqrt((1+x)/(1-x))). For n=0 one has a(0)=0.
%e Rationals A176728/A176729 with offset 0: [0,1/2,0,-1/4,0,-17/6,0,-1955/24,0,-44089/10,0,-4627969/12,... ].
%Y A176726/A176727 a-sequence for triangle A060081.
%K sign,easy,frac
%O 1,5
%A _Wolfdieter Lang_, Jul 14 2010
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