OFFSET
1,2
COMMENTS
Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 2's, every 3 is next to 3 4's, every 4 is next to 4 1's
Table starts
..1....3......4.......5..........8..........12............17..............25
..3....6.....14......30.........67.........146...........320.............706
..4...14.....40.....131........383........1232..........3966...........12314
..5...30....131.....594.......2930.......15274.........76809..........380093
..8...67....383....2930......27320......249402.......2032584........15952022
.12..146...1232...15274.....249402.....3707781......46887621.......578160718
.17..320...3966...76809....2032584....46887621.....926499600.....17962317556
.25..706..12314..380093...15952022...578160718...17962317556....539621963877
.37.1550..38745.1900745..128543371..7394096617..351103877665..16067939829696
.54.3403.122989.9527317.1060801262.96338727461.6945098996988.486076221745274
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..161
EXAMPLE
Some solutions for n=6 k=4
..0..0..1..1....0..1..1..0....1..0..0..0....0..0..0..1....0..0..0..1
..1..1..1..0....2..2..1..0....1..0..0..0....1..1..1..1....0..0..2..2
..1..1..4..1....2..2..1..0....2..2..0..0....2..2..2..0....0..0..2..2
..0..0..1..1....0..1..1..0....2..2..0..0....2..0..2..0....2..2..1..0
..0..2..2..0....0..1..1..1....0..0..0..0....2..2..2..0....2..2..1..1
..1..2..2..1....1..1..0..1....1..1..1..1....0..0..0..0....0..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Oct 02 2011
STATUS
approved