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 A173315 #7 Jul 28 2015 16:42:26 %S A173315 1,1,2,-4,0,16,-48,96,-160,256,-448,896,-1920,4096,-8448,16896,-33280, %T A173315 65536,-130048,260096,-522240,1048576,-2101248,4202496,-8396800, %U A173315 16777216,-33538048,67076096,-134184960,268435456,-536936448,1073872896,-2147614720,4294967296 %N A173315 Inverse binomial transform of A131800. %H A173315 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (-4, -6, -4). %F A173315 A131800(n) = A000111(n+2) mod 10. %F A173315 a(n)= -4*a(n-1) -6*a(n-2) -4*a(n-3), n>3. G.f.: (5*x+12*x^2+14*x^3+1)/((2*x+1)*(2*x^2+2*x+1)). %Y A173315 Cf. A106603. %K A173315 sign,easy %O A173315 0,3 %A A173315 _Paul Curtz_, Feb 16 2010 %E A173315 Extended, keyword:sign added by _R. J. Mathar_, Feb 24 2010