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 A131122 #18 Oct 15 2018 02:52:38
%S A131122 2,4,6,8,20,26,32,38,68,86,92,98,128,164,188,278,302,512,2048,8192,
%T A131122 32768,131072,524288,2097152,8388608,33554432,134217728,536870912
%N A131122 Even numbers that are not the sum of an evil prime (A027699) and an odious prime (A027697).
%C A131122 Every power of 2 with an odd exponent is a term.
%C A131122 Every pair of primes that sum to 4^k, with k > 1, consists of an evil prime and an odious prime. The smallest example is 16 = 3+13 = 5+11; 3 and 5 are evil, 11 and 13 are odious.
%e A131122 32 is here because 32 = 3+29 = 13+19, 3 and 29 are both odious, and 13 and 19 are both evil.
%o A131122 (PARI) isok(n) = {if ((n % 2) == 0, forprime(p=3, n, if ((norml2(binary(p))%2==1) && (isprime(q=n-p)) && (!bittest(norml2(binary(q)), 0)), return (0));); return (1);); return(0);}
%o A131122 lista(nn) = forstep(n=2, nn, 2, if (isok(n), print1(n, ", "))); \\ _Michel Marcus_, Oct 14 2018
%Y A131122 Cf. A004171 (odd powers of 2), A027697, A027699.
%K A131122 nonn,more
%O A131122 1,1
%A A131122 _T. D. Noe_, Jun 15 2007
%E A131122 a(23)-a(28) from _Michel Marcus_, Oct 14 2018