A002826 - OEIS

%I M3883 N1593 #31 Feb 20 2024 12:13:29

%S 1,5,18,82,643,15182,7848984,549761932909,10626621620680478174719,

%T 1701411834605079120446041612364090304458,

%U 79607061350691085453966118726400345961810854094316840855510985236799831016092

%N Number of precomplete Post functions of n variables.

%D S. V. Jablonskii, Some results in the theory of functional systems (Russian), in Proceedings of the International Congress of Mathematicians (Helsinki, 1978), pp. 963-971, Acad. Sci. Fennica, Helsinki, 1980.

%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%D E. Ju. Zaharova, V. B. Kudrjavcev, and S. V. Jablonskii, Precomplete classes in k-valued logics. (Russian) Dokl. Akad. Nauk SSSR 186 1969 509-512. English translation in Soviet Math. Doklady 10 (No. 3, 1969), 618-622.

%H Ivo Rosenberg, <a href="http://dx.doi.org/10.1016/0097-3165(73)90058-7">The number of maximal closed classes in the set of functions over a finite domain</a>, J. Combinatorial Theory Ser. A 14 (1973), 1-7.

%H E. Ju. Zaharova, V. B. Kudrjavcev, and S. V. Jablonskii, <a href="/A002824/a002824.pdf">Precomplete classes in k-valued logics. (Russian)</a>, Dokl. Akad. Nauk SSSR 186 (1969), 509-512. English translation in Soviet Math. Doklady 10 (No. 3, 1969), 618-622. [Annotated scanned copy]

%F a(n) = A002824(n) + A246069(n) + A246137(n) + A008827(n) + A002825(n) + A246417(n). - _Sean A. Irvine_, Aug 25 2014

%Y Cf. A002824, A002825, A008827, A246069, A246137, A246417.

%K nonn

%O 1,2

%A _N. J. A. Sloane_

%E More terms from _Sean A. Irvine_, Aug 25 2014