The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A215745 T(n,k)=Number of horizontal, vertical, diagonal and antidiagonal neighbor colorings of the odd squares of an nXk array with new integer colors introduced in row major order 6

%I

%S 1,1,1,1,1,1,1,1,1,1,1,2,1,2,1,2,5,8,8,5,2,2,15,22,78,22,15,2,5,52,

%T 364,1250,1250,364,52,5,5,203,1474,29084,24236,29084,1474,203,5,15,

%U 877,40612,908408,4851360,4851360,908408,40612,877,15,15,4140,211784,36224616

%N T(n,k)=Number of horizontal, vertical, diagonal and antidiagonal neighbor colorings of the odd squares of an nXk array with new integer colors introduced in row major order

%C Table starts

%C ..1.....1.......1..........1...........1............2............2

%C ..1.....1.......1..........2...........5...........15...........52

%C ..1.....1.......1..........8..........22..........364.........1474

%C ..1.....2.......8.........78........1250........29084.......908408

%C ..1.....5......22.......1250.......24236......4851360....190497926

%C ..2....15.....364......29084.....4851360...1396243937.621070325112

%C ..2....52....1474.....908408...190497926.621070325112

%C ..5...203...40612...36224616.83943993818

%C ..5...877..211784.1780689974

%C .15..4140.8520924

%C .15.21147

%C .52

%H R. H. Hardin, <a href="/A215745/b215745.txt">Table of n, a(n) for n = 1..84</a>

%e Some solutions for n=3 k=4

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

%e ..2..x..3..x....2..x..3..x....2..x..3..x....2..x..3..x....1..x..2..x

%e ..x..4..x..0....x..4..x..2....x..1..x..4....x..1..x..2....x..3..x..0

%Y Column 2 is A000110(n-2)

%K nonn,tabl

%O 1,12

%A _R. H. Hardin_ Aug 22 2012

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 3 17:13 EDT 2021. Contains 346439 sequences. (Running on oeis4.)