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A069400
Half the number of 7 X n binary arrays with a path of adjacent 1's and a path of adjacent 0's from top row to bottom row.
0
1, 1219, 587031, 182702967, 44515781333
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OFFSET
2,2
LINKS
Table of n, a(n) for n=2..6.
CROSSREFS
Cf. 1 X n
A000225
, 2 X n
A016269
, 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:
A252600
A293479
A031781
*
A233660
A015279
A179140
Adjacent sequences:
A069397
A069398
A069399
*
A069401
A069402
A069403
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Mar 22 2002
STATUS
approved
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Last modified August 28 13:05 EDT 2024. Contains 375507 sequences. (Running on oeis4.)