A069377 - OEIS

%I #12 Apr 30 2024 01:51:25

%S 1,22619537,73209847696773,115159568055775538305,

%T 127111602733664216603859933,114600698023505978867449552531361,

%U 90979848541738331379871952593270363301,66310152669631463041584664319631353072678161,45499186393097406209322583222635994035907090539853

%N Number of 19 X n binary arrays with a path of adjacent 1's from top row to bottom row.

%Y 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 nonn

%O 1,2

%A _R. H. Hardin_, Mar 22 2002

%E a(5)-a(9) from _Sean A. Irvine_, Apr 30 2024