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%I #6 Oct 10 2019 00:19:07
%S 4,6,9,10,14,15,21,25,35,49
%N Composite numbers n such that juxtaposition of prime factors of n has length 2.
%C There are exactly 10 such numbers.
%Y Cf. A036327-A036334, A046368.
%K nonn,base,fini,full
%O 1,1
%A _Patrick De Geest_, Dec 15 1998
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