%I A001473 M4206 N1756
%S A001473 0,0,0,6,30,180,840,5460,30996,209160,1290960,9753480,69618120,
%T A001473 571627056,4443697440,40027718640,346953934320,3369416698080,
%U A001473 31421601510336,328430320909920,3331475969159520,37124416523261760
%N A001473 Number of degree-n permutations of order exactly 4.
%D A001473 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A001473 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A001473 L. Moser and M. Wyman, On solutions of x^d = 1 in symmetric groups, Canad. 
               J. Math., 7 (1955), 159-168.
%F A001473 E.g.f.: -exp(x+1/2*x^2)+exp(x+1/2*x^2+1/4*x^4).
%Y A001473 Cf. A000085, A001470, A001472, A052501, A053496-A053505, A001189, A001471, 
               A001473, A061121-A061128.
%Y A001473 Sequence in context: A001341 A089896 A057754 this_sequence A063888 A029571 
               A109501
%Y A001473 Adjacent sequences: A001470 A001471 A001472 this_sequence A001474 A001475 
               A001476
%K A001473 nonn
%O A001473 1,4
%A A001473 N. J. A. Sloane (njas(AT)research.att.com) and J. H. Conway (conway(AT)math.princeton.edu)
%E A001473 More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 14 2001