Search: id:A092126
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%I A092126
%S A092126 213,215,299,411,1133,1135,1343,1345,1383,1385,1387,1685,1793,1835,1837,
%T A092126 1891,1937,1939,1957,2045,2315,2317,2513,2567,2807,2809,2929,3091,3093,
%U A092126 3095,3097,3147,3149,3647,3957,3977,3979,4115,4313,4315,4411,4529,4531
%N A092126 Numbers n such that n, n+2, n+4, n+6 are semiprimes.
%C A092126 Semiprimes in arithmetic progression. All terms are odd, see also A056809.
%t A092126 PrimeFactorExponentsAdded[n_] := Plus @@ Flatten[Table[ #[[2]], {1}] 
               & /@ FactorInteger[n]]; Select[ Range[ 4626], PrimeFactorExponentsAdded[ 
               # ] == PrimeFactorExponentsAdded[ # + 2] == PrimeFactorExponentsAdded[ 
               # + 4] == PrimeFactorExponentsAdded[ # + 6] == 2 &] (from Robert 
               G. Wilson v Feb 24 2004)
%Y A092126 Cf. A056809, A070552, A092125, A092127, A092128, A092129.
%Y A092126 Sequence in context: A007942 A079794 A138568 this_sequence A085309 A092127 
               A082967
%Y A092126 Adjacent sequences: A092123 A092124 A092125 this_sequence A092127 A092128 
               A092129
%K A092126 easy,nonn
%O A092126 1,1
%A A092126 Zak Seidov (zakseidov(AT)yahoo.com), Feb 22 2004

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