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 A374467 #7 Jul 14 2024 08:42:28 %S A374467 2,3,5,7,11,13,17,19,23,29,30,31,37,41,42,43,47,53,59,61,66,67,70,71, %T A374467 72,73,78,79,83,89,97,101,102,103,105,107,108,109,110,113,114,127,128, %U A374467 130,131,137,138,139,149,151,154,157,163,165,167,170,173,174,179,180,181,182,186,190,191,192,193,195,197,199 %N A374467 Numbers that are products of an odd number of primes and the total number of 1-bits in the exponents of their prime factorization n is odd. %H A374467 Antti Karttunen, <a href="/A374467/b374467.txt">Table of n, a(n) for n = 1..12000</a> %F A374467 {k | A001222(k) is odd and A064547(k) is odd}. %o A374467 (PAR) isA374467 = A374466; %Y A374467 Cf. A001222, A064547, A374466 (characteristic function). %Y A374467 Intersection of A000028 and A026424. %Y A374467 Differs from A374595 first at n=43, where a(43) = 128, a term that is missing from A374595. %K A374467 nonn %O A374467 1,1 %A A374467 _Antti Karttunen_, Jul 14 2024