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 A255572 #9 May 14 2015 15:57:36
%S A255572 0,0,0,0,1,1,2,2,3,4,5,5,6,6,7,8,9,9,10,10,11,12,13,13,14,14,15,16,17,
%T A255572 17,18,18,19,20,21,22,23,23,24,25,26,26,27,27,28,29,30,30,31,32,33,34,
%U A255572 35,35,36,36,37,38,39,39,40,40,41,42,43,44,45,45,46,46,47,47,48,48,49,50,51,51,52,52,53,53
%N A255572 a(n) = Number of terms larger than one in range 0 .. n of A205783.
%H A255572 Antti Karttunen, <a href="/A255572/b255572.txt">Table of n, a(n) for n = 0..8192</a>
%F A255572 Other identities and observations. For all n >= 1:
%F A255572 a(n) = A255573(n) - 1.
%F A255572 a(n) <= A065855(n).
%F A255572 a(n) <= A091245(n).
%o A255572 (PARI)
%o A255572 A255572_write_bfile(up_to_n) = { my(n,a_n=0); for(n=0, up_to_n, if(((n > 1) && !polisirreducible(Pol(binary(n)))),a_n++); write("b255572.txt", n, " ", a_n)); };
%o A255572 A255572_write_bfile(8192);
%Y A255572 Essentially one less than A255573 (after the initial zero).
%Y A255572 Cf. A065855, A091245, A205783, A255574.
%K A255572 nonn
%O A255572 0,7
%A A255572 _Antti Karttunen_, May 14 2015