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 A144471 #13 Nov 11 2017 15:17:20
%S A144471 1,3,-5,13,-30,61,-119,234,-467,937,-1878,3757,-7511,15018,-30035,
%T A144471 60073,-120150,240301,-480599,961194,-1922387,3844777,-7689558,
%U A144471 15379117,-30758231,61516458,-123032915,246065833,-492131670,984263341,-1968526679,3937053354,-7874106707
%N A144471 Inverse binomial transform of A020806.
%H A144471 <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (-3,-3,-2)
%F A144471 |a(n+1)| - 2*|a(n)| = -A117378(n-1) = A117378(n+2), n>0.
%F A144471 a(n) = -3*a(n-1) - 3*a(n-2) - 2*a(n-3), n > 3.
%F A144471 G.f.: (6*x+7*x^2+9*x^3+1) / ((2*x+1) * (1+x+x^2)). - _R. J. Mathar_, Sep 07 2009
%p A144471 Digits := 200 ; read("transforms") ; read("transforms3") ; x := 1/7 ; L := CONSTTOLIST(x) ; BINOMIALi(L) ; # _R. J. Mathar_, Sep 07 2009
%t A144471 LinearRecurrence[{-3,-3,-2},{1,3,-5,13},40] (* _Harvey P. Dale_, Nov 11 2017 *)
%Y A144471 Cf. A141425, A141532.
%K A144471 sign
%O A144471 0,2
%A A144471 _Paul Curtz_, Oct 10 2008
%E A144471 Edited and extended by _R. J. Mathar_, Sep 07 2009