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A069445
Half the number of n X 7 binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.
0
64, 63168, 22886754, 5267756806
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OFFSET
2,1
LINKS
Table of n, a(n) for n=2..5.
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:
A334605
A103346
A123394
*
A227604
A159677
A013832
Adjacent sequences:
A069442
A069443
A069444
*
A069446
A069447
A069448
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Mar 22 2002
STATUS
approved
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Last modified May 30 21:27 EDT 2024. Contains 372974 sequences. (Running on oeis4.)