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 A383078 #10 Apr 18 2025 13:35:50 %S A383078 9,16,50,140,407,1168,3367,9691,27908,80354,231374,666211,1918282, %T A383078 5523469,15904199,45794312,131859470,379674208,1093228315,3147825472, %U A383078 9063802211,26098178315,75146709476,216376326214,623030800330,1793945691511,5165460748322,14873351444633 %N A383078 Number of n-digit positive integers where all pairs of consecutive digits have a difference of at least 6. %H A383078 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (2,3,-1,-1). %F A383078 G.f.: x*(2*x^4+x^3-9*x^2-2*x+9)/((x+1)*(x^3-3*x+1)). - _Alois P. Heinz_, Apr 15 2025 %Y A383078 Cf. A052268, A100062, A383070, A383071, A383072, A383077. %Y A383078 Cf. A147704. %K A383078 nonn,easy %O A383078 1,1 %A A383078 _Edwin Hermann_, Apr 15 2025 %E A383078 More terms from _Alois P. Heinz_, Apr 15 2025