OFFSET
1,13
COMMENTS
Table starts
.0.0.........0............0................0................0................0
.0.0.........0............0................0................0................0
.0.0.......240.........9506...........329630.........10549476........322266792
.0.0......9506......1077872........107299718.......9825363032.....858207069508
.0.0....329630....107299718......30554083556....7991964336476.1992808557330302
.0.0..10549476...9825363032....7991964336476.5967754731205544
.0.0.322266792.858207069508.1992808557330302
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..71
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = a(n-1)
k=3: [order 20] for n>21
EXAMPLE
Some solutions for n=3 k=4
..0..1..1..1. .0..1..1..0. .0..0..1..0. .0..1..1..0. .0..0..0..1
..2..1..2..2. .1..0..0..1. .1..2..0..2. .1..1..2..1. .2..1..0..0
..1..1..1..0. .2..0..0..0. .0..0..0..0. .1..0..1..0. .2..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 09 2017
STATUS
approved