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%I #18 Apr 30 2024 16:29:58
%S 15,175,1985,22193,247759,2764991,30856705,344356289,3842988975,
%T 42887577455,478623939553,5341429762353,59610217019311,
%U 665248512113343,7424156719466465,82853403589520257,924641917817567951
%N Number of n X 4 binary arrays with a path of adjacent 1's from top row to bottom row.
%H Sean A. Irvine, <a href="/A069379/b069379.txt">Table of n, a(n) for n = 1..200</a>
%Y Column 4 of A359576.
%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,changed
%O 1,1
%A _R. H. Hardin_, Mar 22 2002
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