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A173968
Sums of 3 consecutive semiprimes.
1
102, 258, 282, 366, 426, 606, 642, 654, 906, 1182, 1338, 1902, 2094, 2526, 2766, 3126, 3414, 3786, 4038, 4206, 4926, 5286, 5514, 5682, 5826, 5946, 6306, 6546, 6654, 6918, 7086, 7302, 7386, 7554, 7926, 8166, 8202, 9294, 10158, 10806, 11082, 11598, 11706
OFFSET
1,1
COMMENTS
33 + 34 + 35 = 102,..
MATHEMATICA
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
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved