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 A069369 #12 Apr 30 2024 01:50:59 %S A069369 1,19601,120070149,478623939553,1545323639404349,4423369428678533705, %T A069369 11738064445690843712709,29601436900513534956486417, %U A069369 72007238386097441302774324845,170577316159214009818521435822905,396017759826921556057184566557279157 %N A069369 Number of 11 X n binary arrays with a path of adjacent 1's from top row to bottom row. %Y A069369 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 A069369 nonn %O A069369 1,2 %A A069369 _R. H. Hardin_, Mar 22 2002 %E A069369 a(6)-a(11) from _Sean A. Irvine_, Apr 30 2024