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A088710 Numbers n which are a product of two primes j and k such that n-j-k is prime. 2

%I

%S 9,10,14,15,21,26,33,35,38,39,51,62,65,69,77,86,91,93,95,111,122,123,

%T 129,133,146,159,161,201,203,206,209,213,215,217,218,221,249,278,287,

%U 291,299,301,302,303,305,321,335,339,362,371,381,386,395,398,403,407

%N Numbers n which are a product of two primes j and k such that n-j-k is prime.

%H Harvey P. Dale, <a href="/A088710/b088710.txt">Table of n, a(n) for n = 1..1000</a>

%e a(2)=10 because 10 has only one pair of prime factors (2 and 5) and 10-2-5=3 which is prime.

%t ptpQ[n_]:=PrimeOmega[n]==2&&PrimeQ[n-Total[Flatten[Table[#[[1]],#[[2]]]&/@ FactorInteger[n]]]]; Select[Range[500],ptpQ] (* _Harvey P. Dale_, Jun 04 2018 *)

%Y Cf. A001358.

%K nonn

%O 1,1

%A Chuck Seggelin (barkeep(AT)plastereddragon.com), Oct 11 2003

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Last modified July 24 01:41 EDT 2021. Contains 346269 sequences. (Running on oeis4.)