login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A284113 T(n,k)=Number of nXk 0..1 arrays with the number of 1s king-move adjacent to some 0 equal to the number of 0s adjacent to some 1, with top left element zero. 8
1, 2, 2, 3, 4, 3, 6, 13, 13, 6, 10, 46, 25, 46, 10, 19, 160, 435, 435, 160, 19, 33, 571, 1230, 5896, 1230, 571, 33, 62, 2095, 20275, 80200, 80200, 20275, 2095, 62, 112, 7802, 67957, 1143533, 905327, 1143533, 67957, 7802, 112, 212, 29326, 1057769, 16442183 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

...1......2........3...........6.............10................19

...2......4.......13..........46............160...............571

...3.....13.......25.........435...........1230.............20275

...6.....46......435........5896..........80200...........1143533

..10....160.....1230.......80200.........905327..........61595318

..19....571....20275.....1143533.......61595318........3514396333

..33...2095....67957....16442183......835390074......202053817163

..62...7802..1057769...240146980....51786529350....11804599876991

.112..29326..4091201..3538905880...809052347723...696189477669561

.212.111040.57977326.52568393480.45439256969227.41397421665690592

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..161

EXAMPLE

Some solutions for n=4 k=4

..0..0..0..1. .0..1..1..1. .0..0..0..0. .0..0..0..0. .0..0..1..0

..1..1..1..1. .1..1..0..1. .1..0..1..0. .0..1..1..1. .1..1..1..0

..1..0..0..1. .1..0..0..0. .1..1..1..1. .0..1..1..1. .0..1..1..0

..0..0..1..0. .0..0..0..1. .1..1..1..0. .1..0..1..0. .1..1..0..0

CROSSREFS

Column 1 is A274160(n+1).

Sequence in context: A231441 A284199 A284165 * A324480 A164975 A253889

Adjacent sequences:  A284110 A284111 A284112 * A284114 A284115 A284116

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Mar 20 2017

STATUS

approved

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 17 22:41 EDT 2019. Contains 328134 sequences. (Running on oeis4.)