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 A358776 #7 Dec 01 2022 21:09:12 %S A358776 6,10,14,22,24,26,34,38,40,46,54,56,58,62,74,82,86,88,90,94,96,104, %T A358776 106,118,122,126,134,136,142,146,150,152,158,160,166,178,184,194,198, %U A358776 202,206,210,214,216,218,224,226,232,234,248,250,254,262,274,278,294,296,298,302,306,314,326,328,330,334 %N A358776 Positive integers with an even number of prime factors (counting repetitions) that sum to an odd number. %C A358776 All terms are even because they must have an odd 2-adic valuation. %o A358776 (PARI) isA358776(n) = A358775(n); %Y A358776 Setwise difference A028260 \ A345452. %Y A358776 Intersection of any two of A028260, A036554, A335657. %Y A358776 Cf. A358775 (characteristic function). %Y A358776 Not 2*A249370 (for example, 105 is missing from the latter). %K A358776 nonn %O A358776 1,1 %A A358776 _Antti Karttunen_, Dec 01 2022