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 A050754 #5 Oct 16 2019 23:44:25 %S A050754 0,1,128,2187,16384,78125,823543,2097152,4782969,19487171,35831808, %T A050754 62748517,105413504,170859375,268435456,893871739,4586471424, %U A050754 6103515625,8031810176,10460353203,13492928512,17249876309,34359738368 %N A050754 Seventh powers containing no pair of consecutive equal digits. %Y A050754 Cf. A043096, A001015, A050746. %K A050754 nonn,base %O A050754 0,3 %A A050754 _Patrick De Geest_, Sep 15 1999