This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A179699 #19 Jul 06 2020 02:39:51 %S A179699 2304,6400,12544,26244,30976,43264,73984,92416,135424,164025,215296, %T A179699 246016,321489,350464,430336,473344,565504,719104,793881,891136, %U A179699 952576,1108809,1149184,1290496,1364224,1562500,1597696,1763584 %N A179699 Numbers of the form p^8*q^2 where p and q are distinct primes. %H A179699 T. D. Noe, <a href="/A179699/b179699.txt">Table of n, a(n) for n = 1..1000</a> %H A179699 Will Nicholes, <a href="http://willnicholes.com/math/primesiglist.htm">Prime Signatures</a> %F A179699 Sum_{n>=1} 1/a(n) = P(2)*P(8) - P(10) = A085548 * A085968 - P(10) = 0.000843..., where P is the prime zeta function. - _Amiram Eldar_, Jul 06 2020 %t A179699 f[n_]:=Sort[Last/@FactorInteger[n]]=={2,8}; Select[Range[10^6], f] %o A179699 (PARI) list(lim)=my(v=List(),t);forprime(p=2, (lim\4)^(1/8), t=p^8;forprime(q=2, sqrt(lim\t), if(p==q, next);listput(v,t*q^2))); vecsort(Vec(v)) \\ _Charles R Greathouse IV_, Jul 24 2011 %Y A179699 Cf. A085548, A085968. %K A179699 nonn %O A179699 1,1 %A A179699 _Vladimir Joseph Stephan Orlovsky_, Jul 24 2010