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 A079064 #28 Oct 31 2023 17:34:23 %S A079064 0,1,2,3,4,5,6,7,8,9,11,14,17,41,44,47,71,74,77,111,200,411,500,502, %T A079064 711,800,802,1111,2000,2002,2003,4111,5000,5002,7111,8000,8002,11111, %U A079064 20000,20002,41111,41114,41117,41141,41144,41147,41171,41174,41177,41411,50000 %N A079064 a(n) is the next available entirely straight or curved number, depending on whether n contains a straight digit or not. %H A079064 David Consiglio, Jr., <a href="/A079064/b079064.txt">Table of n, a(n) for n = 0..1000</a> %H A079064 David Consiglio, Jr., <a href="/A079064/a079064.py.txt">Python program</a> %e A079064 a(10) must be the first entirely straight number greater than 9, as 1 is straight, therefore a(10)=11. %e A079064 a(20) must be the first entirely curved number greater than 111, therefore a(20)=200. %Y A079064 Cf. A028373 (straight numbers), A028374 (curved numbers), A079170. %K A079064 nonn,base %O A079064 0,3 %A A079064 _Jon Perry_, Feb 02 2003 %E A079064 Edited by _Charles R Greathouse IV_, Aug 02 2010 %E A079064 a(35) and beyond from _David Consiglio, Jr._, Oct 31 2023