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Semiprimes associated with A229480.
1

%I #41 Oct 03 2013 18:53:11

%S 6,21,26,34,38,46,74,86,33,51,69,87,55,77,118,134,146,111,129,213,249,

%T 115,145,355,161,623,187,209,253,451,517,803,221,377,323,493,697,731,

%U 437,206,278,302,358,362,386,943,458,478,502,514,586,614,622,674

%N Semiprimes associated with A229480.

%C None of the semiprimes are squares. - _T. D. Noe_, Oct 03 2013

%H Charles R Greathouse IV, <a href="/A229498/b229498.txt">Table of n, a(n) for n = 1..10000</a>

%o (PARI) do(lim)=my(v=List(), t); forprime(q=2, sqrtint(lim\10), forprime(p=2, min(sqrtint(lim\q), q), t=eval(Str(p, p*q, q)); if(t>lim, next(2)); if(isprime(t), listput(v, [t,p*q])))); apply(u->u[2],vecsort(Vec(v),1)) \\ _Charles R Greathouse IV_, Oct 03 2013

%Y Cf. A001358.

%K nonn,base

%O 1,1

%A _G. L. Honaker, Jr._, Oct 01 2013