A070553 - OEIS

%I #7 Mar 31 2012 13:21:54

%S 0,1,2,3,4,5,6,0,3,6,2,5,1,4,0,2,4,6,1,3,5,0,6,5,4,3,2,1,0,4,1,5,2,6,

%T 3,0,5,3,1,6,4,2,0,1,2,3,4,5,6,0,3,6,2,5,1,4,0,2,4,6,1,3,5,0,6,5,4,3,

%U 2,1,0,4,1,5,2,6,3,0,5,3,1,6,4,2

%N Rectangular array read by rows: n-th row gives the 7 numbers k*10^n mod 7 for 0 <= k < 7.

%C Row n and rows n+6i are equal.

%e Array begins:

%e 0 1 2 3 4 5 6

%e 0 3 6 2 5 1 4

%e 0 2 4 6 1 3 5

%e 0 6 5 4 3 2 1

%e 0 4 1 5 2 6 3

%e 0 5 3 1 6 4 2

%e ...

%K nonn,easy,tabf

%O 1,3

%A _Jon Perry_, Jan 14 2003