Search: id:A001321
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%I A001321 M5196 N2260
%S A001321 27,10206,1271126683458,18476103676807778218052102700370958034,
%T A001321 7265803540496746516909255882155064308244195242457305499892587603123705487410575597994679253740369367156601604\
               24670
%N A001321 Number of Post functions.
%D A001321 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A001321 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A001321 M. A. Harrison and R. G. High, On the cycle index of a product of permutation 
               groups, J. Combin. Theory, 4 (1968), 277-299.
%Y A001321 Sequence in context: A123395 A051680 A013828 this_sequence A111415 A036534 
               A167731
%Y A001321 Adjacent sequences: A001318 A001319 A001320 this_sequence A001322 A001323 
               A001324
%K A001321 nonn
%O A001321 1,1
%A A001321 N. J. A. Sloane (njas(AT)research.att.com).
%E A001321 More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 04 2000

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