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A263669 Number of (n+1)X(3+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

%I

%S 57,8839,1754966,378616581,82911301197,18152851159044,

%T 3975352956264593,870600994321238466,190661571787018620881,

%U 41754877343568316205841,9144318064083473783629151,2002605652522800243822208723

%N Number of (n+1)X(3+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.

%C Column 3 of A263672.

%H R. H. Hardin, <a href="/A263669/b263669.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..3..2..5..4....2..0..4..1....6..6..1..6....0..0..4..5....5..0..4..6

%e ..2..0..5..5....3..3..1..5....3..0..2..2....1..3..0..5....5..0..3..2

%e ..4..1..6..0....2..1..6..4....4..3..3..0....4..1..2..6....6..0..3..0

%Y Cf. A263672.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 23 2015

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Last modified March 30 21:40 EDT 2023. Contains 361623 sequences. (Running on oeis4.)