cp's OEIS Frontend

A219128 T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..2 nXk array.

%I A219128 #6 Jul 23 2025 00:15:02
%S A219128 3,3,9,9,15,27,17,87,69,81,37,205,787,253,243,77,899,3495,6981,1049,
%T A219128 729,163,2521,27993,42231,63183,4205,2187,343,9709,154447,717585,
%U A219128 607115,571149,16887,6561,723,29747,1080809,5940377,20168447,8325319,5167013
%N A219128 T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..2 nXk array.
%C A219128 Table starts
%C A219128 ......3........3............9............17..............37...............77
%C A219128 ......9.......15...........87...........205.............899.............2521
%C A219128 .....27.......69..........787..........3495...........27993...........154447
%C A219128 .....81......253.........6981.........42231..........717585..........5940377
%C A219128 ....243.....1049........63183........607115........20168447........285332189
%C A219128 ....729.....4205.......571149.......8325319.......558561433......12934559893
%C A219128 ...2187....16887......5167013.....114689693.....15524812691.....590246442003
%C A219128 ...6561....68015.....46755215....1583482167....432020067871...26987000751247
%C A219128 ..19683...273471....423105613...21831504231..12027081633341.1232382567427897
%C A219128 ..59049..1100135...3828940359..301126108879.334920902829343
%C A219128 .177147..4425449..34650738731.4153227990805
%C A219128 .531441.17801365.313579561365
%H A219128 R. H. Hardin, <a href="/A219128/b219128.txt">Table of n, a(n) for n = 1..111</a>
%e A219128 Some solutions for n=3 k=4
%e A219128 ..2..2..1..1....1..0..2..2....2..0..2..1....0..0..1..1....0..0..1..1
%e A219128 ..1..0..1..0....0..0..1..2....0..0..1..1....0..0..1..2....1..0..1..1
%e A219128 ..1..0..0..0....0..0..1..1....2..0..2..1....0..0..1..2....1..1..1..2
%Y A219128 Column 1 is A000244
%Y A219128 Column 2 is A217451
%Y A219128 Row 1 is A217450
%K A219128 nonn,tabl
%O A219128 1,1
%A A219128 _R. H. Hardin_ Nov 12 2012