Search: id:A111260
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%I A111260
%S A111260 1,4,16,27,256,729,65536,2985984,4194304,9765625,134217728,387420489,
%T A111260 2176782336,24794911296,30517578125,104857600000,678223072849,
%U A111260 2641807540224,7625597484987,17592186044416,281474976710656
%N A111260 Numbers of the form (m^n)/(n^m) with m > 0 and n>1.
%e A111260 The 4th element is a=27 with m = 3 and n = 9 because 3^9/9^3 = 27.
%p A111260 a:=proc(N) local a, m,n; for m from 1 to N do for n from 2 to N do a:=(m^n)/
               (n^m); if(floor(a)=a)then print(a) fi; od; od; end: # convert into 
               set # sort set
%t A111260 Take[ Select[ Union@Flatten@Table[(m^n)/(n^m), {m, 35}, {n, 2, 35}], 
               IntegerQ[ # ] &], 21] (from Robert G. Wilson v (rgwv(at)rgwv.com), 
               Nov 17 2005)
%Y A111260 Cf. A072651 A072652 A072653.
%Y A111260 Sequence in context: A072873 A072653 A008478 this_sequence A067688 A046358 
               A046366
%Y A111260 Adjacent sequences: A111257 A111258 A111259 this_sequence A111261 A111262 
               A111263
%K A111260 nonn
%O A111260 1,2
%A A111260 Giorgio Balzarotti (greenblue(AT)tiscali.it) and Paolo P. Lava (ppl(AT)spl.at), 
               Nov 12 2005

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