%I #11 Mar 07 2021 00:56:09
%S 1,1,1,1,1,0,0,1,1,0,0,0,1,0,0,1,1,1,1,0,0,0,0,0,1,1,1,1,0,0,0,0,0,1,
%T 1,1,0,1,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,1,1,1,1,1,
%U 1,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,0,0,1,1
%N Numbers of primes between two sexy primes.
%H Robert Israel, <a href="/A104037/b104037.txt">Table of n, a(n) for n = 1..10000</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/SexyPrimes.html">Sexy Primes</a>. [The definition in this webpage is unsatisfactory, because it defines a "sexy prime" as a pair of primes.- _N. J. A. Sloane_, Mar 07 2021].
%p p:=1: q:= 0: r:= 1: s:= 1: count:= 0: Res:= NULL:
%p while count < 100 do
%p t:= charfcn[{true}](isprime(p+6));
%p if t=1 and q=1 then
%p count:= count + 1;
%p Res:= Res, r+s;
%p fi;
%p p:= p+2;
%p q:= r; r:= s; s:= t;
%p od:
%p Res; # _Robert Israel_, Jun 23 2019
%Y Cf. A023201 (sexy primes), A046117.
%K easy,nonn
%O 1,1
%A _Giovanni Teofilatto_, Mar 31 2005
%E Corrected and extended by _Robert Israel_, Jun 23 2019