The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A199230 T(n,k) = Number of n X k 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors. 9
 1, 1, 1, 1, 6, 1, 6, 15, 15, 6, 15, 148, 110, 148, 15, 15, 739, 1114, 1114, 739, 15, 90, 1538, 10790, 55956, 10790, 1538, 90, 226, 19458, 108608, 1167274, 1167274, 108608, 19458, 226, 219, 99290, 1114424, 9196334, 49412210, 9196334, 1114424, 99290, 219, 1436 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts ....1.......1..........1...........6............15............15............90 ....1.......6.........15.........148...........739..........1538.........19458 ....1......15........110........1114.........10790........108608.......1114424 ....6.....148.......1114.......55956.......1167274.......9196334.....530601540 ...15.....739......10790.....1167274......49412210.....792389959...96560931821 ...15....1538.....108608.....9196334.....792389959...70698654245.6443389324257 ...90...19458....1114424...530601540...96560931821.6443389324257 ..226...99290...11614563.11633434848.4344228334421 ..219..199245..122555420.92326218546 .1436.2737170.1306096140 LINKS R. H. Hardin, Table of n, a(n) for n = 1..84 EXAMPLE Some solutions for n=6, k=4 ..0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0 ..1..2..1..2....2..0..1..2....2..0..1..1....2..0..1..1....1..0..1..2 ..1..2..0..1....1..2..0..1....2..1..0..2....1..2..0..2....2..1..0..2 ..2..1..0..1....1..2..1..2....0..2..0..2....2..1..2..1....1..2..1..0 ..2..0..1..2....0..0..2..1....2..1..2..1....2..0..2..0....1..2..0..2 ..0..2..0..2....2..1..2..0....1..2..1..0....0..2..1..1....2..0..2..1 CROSSREFS Sequence in context: A157292 A159828 A131114 * A199101 A366868 A127778 Adjacent sequences: A199227 A199228 A199229 * A199231 A199232 A199233 KEYWORD nonn,tabl AUTHOR R. H. Hardin Nov 04 2011 STATUS approved

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

Last modified December 1 05:26 EST 2023. Contains 367468 sequences. (Running on oeis4.)