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 A108965 #4 Mar 31 2012 13:46:52 %S A108965 10,12,21,23,32,34,43,45,54,56,65,67,76,78,87,89,98,100,101,102,110, %T A108965 112,120,121,122,123,132,201,210,211,212,213,221,223,231,232,233,234, %U A108965 243,312,321,322,323,324,332,334,342,343,344,345,354,423,432,433,434,435,443,445,453,454,455,456,465 %N A108965 Numbers n with property that for each digit in n there is another digit in n differing from it by 1. %Y A108965 This is not A033075. Cf. A134336. %K A108965 base,easy,nonn %O A108965 1,1 %A A108965 _Eric Angelini_, Jul 26 2005 %E A108965 Corrected by _Rick L. Shepherd_, Oct 21 2007