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A254743 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column minus the sum of the minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically 9

%I #4 Feb 06 2015 19:51:04

%S 512,2848,2848,13504,19782,13504,62579,130554,130554,62579,281213,

%T 795666,1209260,795666,281213,1223367,4613180,9683835,9683835,4613180,

%U 1223367,5203324,26334567,74915756,100974022,74915756,26334567,5203324,21804750

%N T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column minus the sum of the minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically

%C Table starts

%C ......512......2848.......13504.........62579.........281213..........1223367

%C .....2848.....19782......130554........795666........4613180.........26334567

%C ....13504....130554.....1209260.......9683835.......74915756........573664291

%C ....62579....795666.....9683835.....100974022.....1036785574......10560688146

%C ...281213...4613180....74915756....1036785574....14206747097.....194159814879

%C ..1223367..26334567...573664291...10560688146...194159814879....3580969060985

%C ..5203324.148992766..4337693061..106118585579..2619450227481...65010218627788

%C .21804750.835291656.32485851354.1056697890479.35003055321356.1168401476128817

%H R. H. Hardin, <a href="/A254743/b254743.txt">Table of n, a(n) for n = 1..219</a>

%F Empirical for column k:

%F k=1: [linear recurrence of order 16] for n>20

%F k=2: [order 57] for n>62

%e Some solutions for n=2 k=4

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

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

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

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Feb 06 2015

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Last modified April 23 10:29 EDT 2024. Contains 371905 sequences. (Running on oeis4.)