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 A064627 #10 Nov 20 2023 00:03:18 %S A064627 2,3,5,7,10,11,13,17,19,21,23,25,27,29,30,31,37,41,42,43,45,47,50,53, %T A064627 54,59,61,63,65,66,67,69,71,73,74,78,79,83,85,86,89,93,97,99,101,103, %U A064627 105,107,109,110,112,113,115,117,119,123,126,127,129,131,135,137,138 %N A064627 Positive integers not in A064494. %o A064627 (SageMath) %o A064627 def divsign(s, k): %o A064627 if not k.divides(s): return 0 %o A064627 return (-1)^(s//k)*k %o A064627 def A(n): %o A064627 s = n + 1 %o A064627 for k in srange(n, 1, -1): %o A064627 s -= divsign(s, k) %o A064627 return s %o A064627 # Use with caution: search range must be adjusted as necessary! %o A064627 def A064627List(size): %o A064627 return sorted(Set([A(n) for n in (1..3*size)]))[0:size] %o A064627 print(A064627List(63)) # _Peter Luschny_, Sep 16 2019 %Y A064627 Cf. A064494. %K A064627 nonn %O A064627 1,1 %A A064627 Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Oct 16 2001