|
|
A222906
|
|
T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order
|
|
14
|
|
|
1, 1, 2, 1, 4, 5, 4, 7, 14, 15, 5, 25, 45, 75, 51, 14, 92, 373, 767, 411, 187, 17, 403, 1202, 7794, 4909, 2522, 715, 75, 1710, 18981, 101398, 180203, 119393, 15919, 2795, 95, 8021, 82020, 1346067, 2117424, 4320431, 759891, 103627, 11051, 411, 36160
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,3
|
|
COMMENTS
|
Table starts
......1.........1............1................4.................5
......2.........4............7...............25................92
......5........14...........45..............373..............1202
.....15........75..........767.............7794............101398
.....51.......411.........4909...........180203...........2117424
....187......2522.......119393..........4320431.........213112150
....715.....15919.......759891........105327353........4854855483
...2795....103627.....20299463.......2592612272......488736554328
..11051....683480....130579169......64243363904....11422629770589
..43947...4554799...3588643955....1600125512239..1152667562787040
.175275..30542304..23230932391...40022606753953.27237086853444410
.700075.205785953.647426033879.1004596097977296
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=3 k=4
..0..1..1..1....0..0..0..0....0..0..0..1....0..0..0..0....0..1..1..1
..1..1..1..1....0..0..1..0....0..0..2..2....0..1..2..2....1..1..1..1
..1..0..1..1....0..0..1..1....2..2..2..2....2..2..2..2....1..1..1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|