OFFSET
1,2
COMMENTS
Every 0 is next to 0 4's, every 1 is next to 1 1's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 0's
Table starts
..1....2.....3.......4........6..........9..........13............19
..2....5.....9......20.......41.........85.........178...........369
..3....9....25......75......213........621........1801..........5219
..4...20....75.....314.....1283.......5311.......21803.........89640
..6...41...213....1283.....7363......42664......247053.......1431868
..9...85...621....5311....42664.....350711.....2873141......23497244
.13..178..1801...21803...247053....2873141....33176391.....383262156
.19..369..5219...89640..1431868...23497244...383262156....6258308430
.28..769.15133..369032..8291425..192348965..4432780869..102222467201
.41.1600.43867.1517961.48020216.1574634137.51234398070.1669087121069
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
EXAMPLE
Some solutions for n=6 k=4
..0..1..1..0....1..1..0..1....0..0..0..0....0..1..0..0....1..0..0..1
..1..0..0..1....0..0..0..1....0..1..1..0....0..1..0..0....1..0..0..1
..1..0..0..1....0..0..0..0....1..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....1..0..0..0....1..0..0..1....1..1..0..0....1..1..0..0
..0..0..0..0....1..0..0..0....0..1..0..1....0..0..0..1....0..0..0..0
..0..0..0..0....0..0..1..1....0..1..0..0....0..0..0..1....0..0..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Oct 11 2011
STATUS
approved