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 A002543 M2098 N0830 #30 Oct 16 2023 23:47:32 %S A002543 0,2,16,980,9332768 %N A002543 Complete Post functions of n variables. %D A002543 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A002543 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %D A002543 Wheeler, Roger F.; Complete propositional connectives. Z. Math. Logik Grundlagen Math. 7 1961 185-198. %D A002543 Wheeler, Roger F.; Complete connectives for the 3-valued propositional calculus. Proc. London Math. Soc. (3) 16 1966 167-191. %H A002543 R. F. Wheeler, <a href="/A002543/a002543.pdf">Complete propositional connectives</a>, Z. Math. Logik Grundlagen Math. 7 1961 185-198. [Annotated scanned copy] %H A002543 R. F. Wheeler, <a href="/A002543/a002543_2.pdf">An asymptotic formula for the number of complete propositional connectives</a>, Z. Math. Logik Grundlagen Math. 8 (1962), 1-4. [Annotated scanned copy] %H A002543 R. F. Wheeler, <a href="/A002542/a002542.pdf">Complete connectives for the 3-valued propositional calculus</a>, Proc. London Math. Soc. (3) 16 (1966), 167-191. [Annotated scanned copy] %Y A002543 Cf. A002542, A002857. %K A002543 nonn,more %O A002543 1,2 %A A002543 _N. J. A. Sloane_