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 A069392 #9 Apr 07 2021 18:55:01 %S A069392 131071,17050729021,2135714594033581,254416775893204873553 %N A069392 Number of n X 17 binary arrays with a path of adjacent 1's from top row to bottom row. %Y A069392 Cf. 1 X n A000225, 2 X n A005061, n X 2 A001333, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452. %K A069392 nonn %O A069392 1,1 %A A069392 _R. H. Hardin_, Mar 22 2002