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 A253177 #9 Mar 26 2015 14:32:29 %S A253177 23,47,53,59,69,71,89,94,106,107,134,141,142,143,159,161,167,177,178, %T A253177 179,188,191,207,212,213,214,215,227,233,239,242,251,263,265,267,268, %U A253177 269,282,283,284,286,287,299,311,317,318,319,321 %N A253177 Numbers which can be expressed with fewer 1s using +, -, and * than with + and *. %C A253177 Numbers n such that A005245(n) > A091333(n). Is it true that a(n) ~ n? %H A253177 Charles R Greathouse IV, <a href="/A253177/b253177.txt">Table of n, a(n) for n = 1..3128</a> %H A253177 <a href="/index/Com#complexity">Index to sequences related to the complexity of n</a> %e A253177 23 = 2*3*4 - 1 = 3*(2*3 + 1) + 2 can be written with 10 1s using subtraction but requires 11 without, hence 23 is a member. Here the digits 2, 3, and 4 are used for clarity, but could be expanded to (1+1), (1+1+1), etc. %Y A253177 Cf. A091333, A005520, A005245, A173419, A255641. %K A253177 nonn %O A253177 1,1 %A A253177 _Charles R Greathouse IV_, Mar 23 2015