This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A141134 #12 Jun 22 2025 16:46:56
%S A141134 1,-8,8,1,1,-16,16,1,1,-24,24,1,1,-32,32,1,1,-40,40,1,1,-48,48,1,1,
%T A141134 -56,56,1,1,-64,64,1,1,-72,72,1,1,-80,80,1,1,-88,88,1,1,-96,96,1,1,
%U A141134 -104,104
%N A141134 Hankel transform of C(2n+4,n+4).
%C A141134 Hankel transform of A002694(n+2).
%C A141134 Hankel transform of A002694(n+1) is sin(Pi*n/2)*(cos(Pi*n)/2-1/2).
%H A141134 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (-2,-3,-4,-3,-2,-1).
%F A141134 G.f.: ( 1-6*x-5*x^2-3*x^3-2*x^4-x^5 ) / ( (1+x)^2*(x^2+1)^2 ).
%t A141134 LinearRecurrence[{-2,-3,-4,-3,-2,-1},{1,-8,8,1,1,-16},60] (* _Harvey P. Dale_, Jun 22 2025 *)
%Y A141134 Cf. A002694.
%K A141134 easy,sign
%O A141134 0,2
%A A141134 _Paul Barry_, Jun 06 2008