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 A257276 #7 May 07 2015 23:10:18 %S A257276 0,1,3,6,13,11,16,9,27,31,2,4,5,7,8,10,12,14,15,17,24,18,25,19,26,28, %T A257276 37,30,38,32,23,20,36,41,39,29,42,43,48,53,47,21,40,50,57,58,66,45,69, %U A257276 59,64,22,49,54,65,81,70,60,71,62,80,33,67,61,74,82,95,92,75,96,101,34,68,84,76,83,102 %N A257276 Inverse permutation of A257277 (least unused number having a digit that divides the previous term). %o A257276 (PARI) vecsort(A257277,,1)[1..200] \\ assuming A257277 is defined as vector with enough (nonzero) terms of that sequence. %Y A257276 Cf. A257277. %K A257276 nonn,base %O A257276 0,3 %A A257276 _M. F. Hasler_, May 07 2015