This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A282275 T(n,k)=Number of nXk 0..2 arrays with no element equal to more than four of its king-move neighbors and with new values introduced in order 0 sequentially upwards. 5

%I

%S 1,2,2,5,14,5,14,121,121,14,41,1085,2992,1085,41,122,9729,75413,75413,

%T 9729,122,365,87238,1899634,5432319,1899634,87238,365,1094,782246,

%U 47863268,390546284,390546284,47863268,782246,1094,3281,7014246

%N T(n,k)=Number of nXk 0..2 arrays with no element equal to more than four of its king-move neighbors and with new values introduced in order 0 sequentially upwards.

%C Table starts

%C ...1......2..........5............14...............41.................122

%C ...2.....14........121..........1085.............9729...............87238

%C ...5....121.......2992.........75413..........1899634............47863268

%C ..14...1085......75413.......5432319........390546284.........28094166670

%C ..41...9729....1899634.....390546284......80034513705......16416580121620

%C .122..87238...47863268...28094166670...16416580121620....9604952929717842

%C .365.782246.1205981686.2020997096826.3367389843804209.5619690409304729594

%H R. H. Hardin, <a href="/A282275/b282275.txt">Table of n, a(n) for n = 1..84</a>

%F Empirical for column k:

%F k=1: a(n) = 4*a(n-1) -3*a(n-2)

%F k=2: a(n) = 8*a(n-1) +8*a(n-2) +6*a(n-3) for n>5

%F k=3: [order 10] for n>11

%F k=4: [order 29] for n>30

%e Some solutions for n=3 k=4

%e ..0..1..0..1. .0..0..0..1. .0..1..2..0. .0..1..1..2. .0..1..0..0

%e ..2..2..0..1. .2..2..1..1. .2..1..2..2. .0..1..2..0. .0..0..0..1

%e ..1..2..1..2. .0..1..1..0. .0..1..2..0. .1..2..1..0. .2..1..2..1

%Y Column 1 is A007051(n-1).

%Y Column 2 is A206628(n-1).

%K nonn,tabl

%O 1,2

%A _R. H. Hardin_, Feb 10 2017

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 April 24 22:26 EDT 2019. Contains 322446 sequences. (Running on oeis4.)