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 A065246 #5 Oct 15 2013 22:31:08 %S A065246 1,4,196,1124864,12545225621776,7565068551396549351877632, %T A065246 11519413104737198429297238164593057431690816, %U A065246 3940200619639447921227904010014361380507973927046544666794829340424572177149721061141426654884915640806627990306816 %N A065246 Formal neural networks with n components. %C A065246 Number of {0,1}^n to {0,1}^n vector-vector maps of which all components are formal neurons (=threshold gates). %D A065246 Labos E. (1996): Long Cycles and Special Categories of Formal Neuronal Networks. Acta Biologica Hungarica, 47: 261-272. %D A065246 Labos E. and Sette M. (1995): Long Cycle Generation by McCulloch-Pitts Networks(MCP-Nets) with Dense and Sparse Weight Matrices. Proc. of BPTM, McCulloch Memorial Conference [eds:Moreno-Diaz R. and Mira-Mira J., pp. 350-359.], MIT Press, Cambridge,MA,USA. %D A065246 McCulloch, W. S. and Pitts W. (1943): A Logical Calculus Immanent in Nervous Activity. Bull. Math. Biophys. 5:115-133. %F A065246 a(n)=A000609(n)^n; for n>1 a(n) < A057156(n). %e A065246 For n=2 the 14 threshold gates determine 14*14=196 neural nets each built purely from threshold gates. For n=3, 104=A000609(3) formal neurons gives 104^3=a(3) networks, all component functions of which are linearly separable {0,1}^3 -> {0,1} vector-scalar functions. %Y A065246 Cf. A000609, A065247, A065248, A064436. %K A065246 nonn %O A065246 0,2 %A A065246 _Labos Elemer_, Oct 26 2001