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 A334103 #9 Apr 18 2020 19:45:14 %S A334103 19,21,23,27,29,31,33,35,37,38,39,42,45,46,53,54,55,58,61,62,65,66,70, %T A334103 73,74,75,76,78,83,84,89,90,92,101,103,106,108,110,113,116,119,122, %U A334103 123,124,125,130,132,140,146,148,150,152,153,156,166,168,178,180,184,187,202,205,206,212,216,220,221,226,232,238,241,244 %N A334103 Numbers n for which A329697(n) == 3. %C A334103 Numbers n for which A171462(n) = n-A052126(n) is in A334102. %C A334103 Among the first 2821 terms (terms < 2^31), there are terms with binary weights 2, 3, 4, 5, 6 and 8. For example, 33 is the first term with binary weight 2, and 255 is the first term with binary weight 8. %H A334103 Antti Karttunen, <a href="/A334103/b334103.txt">Table of n, a(n) for n = 1..2821; all terms <= 2^31</a> %o A334103 (PARI) %o A334103 A329697(n) = if(!bitand(n,n-1),0,1+A329697(n-(n/vecmax(factor(n)[, 1])))); %o A334103 isA334103(n) = (3==A329697(n)); %Y A334103 Row 3 of A334100. %Y A334103 Cf. A052126, A171462, A209229, A329697, A334101, A334102, A334104, A334106. %Y A334103 Cf. A334093 (primes present), A334094. %K A334103 nonn %O A334103 1,1 %A A334103 _Antti Karttunen_, Apr 14 2020