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 A000613 M1241 N0475 #27 Oct 30 2022 15:43:13 %S A000613 2,4,10,46,1372,475499108,1038397981840994509577948, %T A000613 10825608503765473087803384381127710579846422820261084889808 %N A000613 Number of Boolean functions of n variables. %D A000613 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A000613 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A000613 M. A. Harrison, <a href="https://doi.org/10.1109/PGEC.1963.263656">The number of equivalence classes of Boolean functions under groups containing negation</a>, IEEE Trans. Electron. Comput. 12 (1963), 559-561. %H A000613 M. A. Harrison, <a href="/A000370/a000370.pdf">The number of equivalence classes of Boolean functions under groups containing negation</a>, IEEE Trans. Electron. Comput. 12 (1963), 559-561. [Annotated scanned copy] %H A000613 M. A. Harrison, <a href="https://www.jstor.org/stable/2946369">On the classification of Boolean functions by the general linear and affine groups</a>, J. Soc. Indust. Appl. Math. 12 (1964) 285-299. %H A000613 <a href="/index/Bo#Boolean">Index entries for sequences related to Boolean functions</a> %F A000613 a(n) = A000585(n)/2. - _Sean A. Irvine_, Mar 21 2011 %Y A000613 Cf. A000585. %K A000613 nonn,easy,nice %O A000613 1,1 %A A000613 _N. J. A. Sloane_ %E A000613 More terms from _Vladeta Jovovic_, Feb 23 2000