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 A276437 #9 Sep 12 2016 17:01:59 %S A276437 19,25,31,49,55,59,73,77,79,85,91,101,103,109,113,115,119,121,133,137, %T A276437 139,143,145,151,161,163,167,169,175,187,191,197,199,203,205,209,221, %U A276437 229,235,241,247,251,253,259,263,265,269,271,281,287,289,293,295,299,301,311,317,319,323,325,329,341,343,347,349,355,361 %N A276437 Numbers n for which A020639(n) <> A272565(n). %H A276437 Antti Karttunen, <a href="/A276437/b276437.txt">Table of n, a(n) for n = 1..3600</a> %H A276437 <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a> %o A276437 (Scheme, with _Antti Karttunen_'s IntSeq-library) %o A276437 (define A276437 (NONZERO-POS 1 1 (lambda (n) (- (A020639 n) (A272565 n))))) %Y A276437 Cf. A020639, A272565. %Y A276437 Complement: A276347. %Y A276437 Disjoint union of A276447 and A276448. %Y A276437 Cf. A276569 (a subsequence). %K A276437 nonn %O A276437 1,1 %A A276437 _Antti Karttunen_, Sep 11 2016