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A263557 Number of (n+1)X(7+1) 0..4 arrays with each row and column divisible by 7, read as a base-5 number with top and left being the most significant digits. 1

%I

%S 9376,224917356,12550664907064,663874095310569770,

%T 36782403381406660654696,2046727438556074480856205412,

%U 114199199060786708530926848241438,6372406475864986531993455392445505716

%N Number of (n+1)X(7+1) 0..4 arrays with each row and column divisible by 7, read as a base-5 number with top and left being the most significant digits.

%C Column 7 of A263558.

%H R. H. Hardin, <a href="/A263557/b263557.txt">Table of n, a(n) for n = 1..15</a>

%e Some solutions for n=1

%e ..4..0..4..2..1..0..4..1....1..0..1..4..1..0..4..0....1..1..4..0..1..1..1..2

%e ..1..0..1..4..2..0..1..2....2..0..2..1..2..0..1..0....2..2..1..0..2..2..2..4

%Y Cf. A263558.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 21 2015

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Last modified May 18 12:03 EDT 2022. Contains 353807 sequences. (Running on oeis4.)