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 A328077 #9 Oct 21 2019 19:12:43 %S A328077 2,4,6,8,9,10,11,12,14,16,17,18,19,20,21,22,24,25,26,27,28,30,32,33, %T A328077 34,35,36,38,39,40,41,42,43,44,45,46,48,49,50,51,52,53,54,56,57,58,59, %U A328077 60,62,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80 %N A328077 Complement of A192110. %C A328077 Note that, because A192110 assumes i <= 40, it is incorrect to say that the present sequence consists of "the positive integers that cannot be expressed as 2^m-3^n where m and n are integers". %C A328077 This sequence is included because one way to remove the assumption i <= 40 from A192110 (and the fifty other unproved sequences of the same type) would be to show that the complements are correct, using the method used to prove the correctness of A173671. %H A328077 Math Overflow, <a href="https://mathoverflow.net/questions/29926/3n-2m-pm-41-is-not-possible-how-to-prove-it/29956#29956">3^n - 2^m = +-41 is not possible. How to prove it?</a>, Several contributors, Jun 29 2010. %Y A328077 Complement of A192110. %Y A328077 Cf. A192111, A173671. %K A328077 nonn %O A328077 1,1 %A A328077 _N. J. A. Sloane_, Oct 12 2019 %E A328077 Edited by _N. J. A. Sloane_, Oct 21 2019