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 A204696 #9 Aug 27 2015 02:49:28 %S A204696 0,0,0,0,0,16,24,64,112,256,480,1024,1984,4096,8064,16384,32512,65536, %T A204696 130560,262144,523264,1048576,2095104,4194304,8384512,16777216, %U A204696 33546240,67108864,134201344,268435456,536838144,1073741824,2147418112,4294967296,8589803520,17179869184,34359476224,68719476736,137438429184,274877906944 %N A204696 G.f.: (32*x^7/(1-2*x) + 16*x^5 + 24*x^6)/(1-2*x^2). %H A204696 Thomas W. Cusick, and Pantelimon Stanica, <a href="http://dx.doi.org/10.1016/S0012-365X(02)00354-0">Fast evaluation, weights and nonlinearity of rotation-symmetric functions</a>, Discrete Math. 258 (2002), no. 1-3, 289-301. See Eq. (14). %Y A204696 Essentially the same as A156232. %K A204696 nonn %O A204696 0,6 %A A204696 _N. J. A. Sloane_, Jan 18 2012