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A251641 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3 4

%I #4 Dec 06 2014 09:22:08

%S 17511,429399,429399,10560127,29245729,10560127,259228149,2000922455,

%T 2000922455,259228149,6364650023,136454122643,381543775543,

%U 136454122643,6364650023,156279294337,9309440987703,72419349199493,72419349199493

%N T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3

%C Table starts

%C .........17511..........429399..........10560127.........259228149

%C ........429399........29245729........2000922455......136454122643

%C ......10560127......2000922455......381543775543....72419349199493

%C .....259228149....136454122643....72419349199493.38205178788191425

%C ....6364650023...9309440987703.13754155206272959

%C ..156279294337.635207928799359

%C .3837213542225

%H R. H. Hardin, <a href="/A251641/b251641.txt">Table of n, a(n) for n = 1..31</a>

%e Some solutions for n=1 k=4

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

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

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Dec 06 2014

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Last modified April 18 15:05 EDT 2024. Contains 371780 sequences. (Running on oeis4.)