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 A050748 #12 Aug 21 2024 11:52:19 %S A050748 0,1,2,3,5,7,9,11,12,16,18,25,26,29,38,41,44,64,67,75,76,78,85,89,95, %T A050748 97,101,107,116,125,134,135,138,139,149,176,185,205,215,221,241,262, %U A050748 268,272,301,315,324,325,327,336,343,344,351,352,355,357,374,382,386 %N A050748 Numbers k such that the decimal expansion of k^9 contains no pair of consecutive equal digits. %H A050748 Harvey P. Dale, <a href="/A050748/b050748.txt">Table of n, a(n) for n = 1..1000</a> %t A050748 Select[Range[0,400],FreeQ[Differences[IntegerDigits[#^9]],0]&] (* _Harvey P. Dale_, Aug 21 2024 *) %Y A050748 Cf. A050756. %K A050748 nonn,base %O A050748 1,3 %A A050748 _Patrick De Geest_, Sep 15 1999