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A263667
Number of (n+1)X(1+1) 0..6 arrays with each row and column divisible by 11, read as a base-7 number with top and left being the most significant digits.
1
3, 12, 57, 283, 1415, 7097, 35513, 177572, 887845, 4438957, 22194651, 110973054, 554865069, 2774325211, 13871626055, 69358131749, 346790660621, 1733953303574, 8669766516865, 43348832566369, 216744162822867, 1083720814100868
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OFFSET
1,1
COMMENTS
Column 1 of
A263672
.
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) +67*a(n-10) -335*a(n-11)
EXAMPLE
Some solutions for n=4
..3..1....6..2....4..5....1..4....3..1....6..2....4..5....4..5....6..2....4..5
..6..2....6..2....6..2....3..1....4..5....4..5....0..0....3..1....3..1....1..4
..1..4....6..2....6..2....3..1....4..5....6..2....4..5....1..4....6..2....6..2
..1..4....0..0....4..5....6..2....1..4....6..2....0..0....4..5....0..0....1..4
..0..0....6..2....6..2....0..0....0..0....1..4....1..4....4..5....1..4....4..5
CROSSREFS
Cf.
A263672
.
Sequence in context:
A106570
A027140
A110309
*
A101106
A389890
A389286
Adjacent sequences:
A263664
A263665
A263666
*
A263668
A263669
A263670
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Oct 23 2015
STATUS
approved
