%I A054396
%S A054396 28,30,44,63,66,70,76,92,102,117,124,130,138,154,170,172,174,182,188,
%T A054396 190,230,236,238,246,266,268,275,279,282,284,286,290,315,316,318,322,
%U A054396 332,354,370,374,387,412,418,426,428,430,434,442,465,470,494,495,498
%N A054396 Numbers n such that there are precisely 4 groups of order n.
%H A054396 H.-U. Besche, <a href="http://www-public.tu-bs.de:8080/~hubesche/small.html">
               The Small Groups library</a>
%H A054396 Gordon Royle, <a href="http://www.cs.uwa.edu.au/~gordon/remote/group1000.html">
               Numbers of Small Groups</a>
%Y A054396 Cf. A000001, A003277, A054395, A054397, A055561.
%Y A054396 Cf. A000001, A003277, A054395, A054396, A054397, A135850.
%Y A054396 Sequence in context: A042622 A044977 A046466 this_sequence A083274 A067913 
               A116566
%Y A054396 Adjacent sequences: A054393 A054394 A054395 this_sequence A054397 A054398 
               A054399
%K A054396 nonn
%O A054396 1,1
%A A054396 N. J. A. Sloane (njas(AT)research.att.com), May 21 2000
%E A054396 More terms from Christian G. Bower (bowerc(AT)usa.net), May 25 2000