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Sums of 3 consecutive semiprimes.
1

%I #7 Nov 05 2023 09:02:33

%S 102,258,282,366,426,606,642,654,906,1182,1338,1902,2094,2526,2766,

%T 3126,3414,3786,4038,4206,4926,5286,5514,5682,5826,5946,6306,6546,

%U 6654,6918,7086,7302,7386,7554,7926,8166,8202,9294,10158,10806,11082,11598,11706

%N Sums of 3 consecutive semiprimes.

%C 33 + 34 + 35 = 102,..

%t f[n_]:=Last/@FactorInteger[n]=={1,1}||Last/@FactorInteger[n]=={2};lst={};Do[If[f[n],If[f[n+1]&&f[n+2],AppendTo[lst,3*n+3]]],{n,8!}];lst

%Y Cf. A001358, A173966, A173967.

%K nonn

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Mar 03 2010