Search: id:A077555
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%I A077555
%S A077555 4,24,216,2160,32400,810000,9525600,238140000,8334900000,408410100000,
%T A077555 6051137400000,296505732600000,16307815293000000,1255701777561000000,
%U A077555 151939915084881000000,1074848105961630000000,82763304159045510000000
%N A077555 Product of terms of n-th row of A077553.
%C A077555 If there are two sets of distinct composite numbers satisfying the above 
               condition then the set with lesser product is chosen irrespective 
               of the number of prime divisors. Perhaps the ambiguity may not arise. 
               E.g. Row 6 is 4,6,9,10,15,25. This row can not be extended to get 
               the next row without bringing in another prime because every number 
               divisible by 2,3 or 5 will be a multiple of one of the previous terms. 
               Hence in row 7, prime 7 has to be brought in and then we get a new 
               set of numbers 4,6,9,10,14,15,21.
%Y A077555 Cf. A001358, A077553, A077554, A087112, A005843.
%Y A077555 Sequence in context: A010039 A162314 A112141 this_sequence A166881 A145237 
               A034256
%Y A077555 Adjacent sequences: A077552 A077553 A077554 this_sequence A077556 A077557 
               A077558
%K A077555 nonn
%O A077555 0,1
%A A077555 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 10 2002
%E A077555 More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 21 
               2003

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