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 A262459 #8 Feb 16 2025 08:33:27 %S A262459 0,1,3072,2066242608,562949953421312000,94296410679817199707031250000, %T A262459 13584783430350289567229247264873005482770432, %U A262459 2238270252895659596439884146393953794861120109653175515742208 %N A262459 Number of n-valued logics. %D A262459 H. Eves and C. V. Newsom, An Introduction to the Foundation and Fundamental concepts of Mathematics, Rinehart & Co., New York, 1958. %H A262459 MathWorld, <a href="https://mathworld.wolfram.com/Three-ValuedLogic.html">Three-Valued Logic</a> %F A262459 a(n) = (n-1)^(n^2+1) * n^(n-2) = A076728(n) * A262458(n). %o A262459 (PARI) a(n) = (n-1)^(n^2+1) * n^(n-2) \\ _Charles R Greathouse IV_, Sep 23 2015 %Y A262459 Cf. A076728 (number of negation tables), A262458 (number of conjunction tables). %K A262459 nonn,easy %O A262459 1,3 %A A262459 Yan A. Denenberg and _Max Alekseyev_, Sep 23 2015