cp's OEIS Frontend

A184564 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock summing to less than 4.

%I A184564 #7 Jun 02 2025 03:49:13
%S A184564 50,336,336,2167,5736,2167,14180,91157,91157,14180,92429,1486258,
%T A184564 3436266,1486258,92429,603249,24057629,134840527,134840527,24057629,
%U A184564 603249,3935721,390354307,5228522011,12900566348,5228522011,390354307,3935721
%N A184564 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock summing to less than 4.
%C A184564 Table starts
%C A184564 .........50............336...............2167..................14180
%C A184564 ........336...........5736..............91157................1486258
%C A184564 .......2167..........91157............3436266..............134840527
%C A184564 ......14180........1486258..........134840527............12900566348
%C A184564 ......92429.......24057629.........5228522011..........1214657950233
%C A184564 .....603249......390354307.......203570564774........115000791536877
%C A184564 ....3935721.....6329171799......7915660174974......10868641315040295
%C A184564 ...25680486...102644935902....307926979784837....1027803541995894568
%C A184564 ..167558680..1664547601646..11976979258313503...97176104485641628222
%C A184564 .1093290051.26993866274311.465872448754593695.9188347231740579769607
%H A184564 R. H. Hardin, <a href="/A184564/b184564.txt">Table of n, a(n) for n = 1..180</a>
%e A184564 Some solutions for 4X3
%e A184564 ..0..2..2....1..2..1....2..0..1....2..2..2....1..1..0....0..1..2....0..1..0
%e A184564 ..0..2..0....0..2..2....0..2..1....1..2..0....2..2..2....2..1..1....2..1..2
%e A184564 ..2..2..1....2..2..0....2..0..2....2..0..2....0..2..0....2..0..2....1..2..1
%e A184564 ..1..1..2....0..1..2....1..1..2....2..2..1....1..2..2....0..2..1....2..1..2
%K A184564 nonn,tabl
%O A184564 1,1
%A A184564 _R. H. Hardin_ Jan 17 2011