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A069443
Half the number of n X 5 binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.
0
0, 16, 2304, 157058, 7664414, 317229344, 11974298030, 427585649578, 14741384488782, 496652156206058, 16475668543000750, 540790107010874580, 17620412998483400934, 571161367966749399684, 18446500586660704024820, 594209705207122247276746
OFFSET
1,2
FORMULA
a(n) = 2^(5*n-1) - A069380(n) + A069405(n). - Sean A. Irvine, Aug 23 2024
CROSSREFS
Cf. 2 X n A000079, n X 1 A000225, 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.
Sequence in context: A196884 A165126 A241368 * A227658 A298197 A016876
KEYWORD
nonn,easy
AUTHOR
R. H. Hardin, Mar 22 2002
EXTENSIONS
More terms from Sean A. Irvine, Aug 23 2024
STATUS
approved