OFFSET
1,1
COMMENTS
Table starts
....81....83...277....367....966...1321...3078....4553...10028...15650...32786
....83...129...243....562....903...1754...2937....5790....9993...19236...33546
...277...243...942...1203...3190...4023...9982...13985...32390...48553..105436
...367...562..1203...3186...4875...9834..14883...31866...51057..105398..174289
...966...903..3190...4875..13278..16083..40626...52755..129102..182841..418022
..1321..1754..4023...9834..16083..34314..49407..109950..159879..350418..540777
..3078..2937..9982..14883..40626..49407.136086..170811..431658..564459.1356918
..4553..5790.13985..31866..52755.109950.170811..399018..570183.1266414.1812423
.10028..9993.32390..51057.129102.159879.431658..570183.1537038.1966755.4790010
.15650.19236.48553.105398.182841.350418.564459.1266414.1966755.4607034.6457959
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..473
FORMULA
Empirical, for every column: a(n)=2*a(n-1)+a(n-2)-4*a(n-3)+4*a(n-4)-2*a(n-5) for n>k+9
EXAMPLE
Some solutions for 4X3
..1..1..0....2..1..1....2..0..0....2..0..0....0..2..1....0..1..0....2..0..1
..2..0..1....1..1..0....0..2..0....0..0..0....0..0..2....1..0..1....0..2..0
..0..2..0....1..0..1....1..0..2....0..0..0....0..0..0....0..1..0....2..0..2
..2..0..2....0..1..2....0..1..1....2..0..0....1..0..0....0..0..1....0..2..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 22 2011
STATUS
approved