OFFSET
1,1
COMMENTS
Table starts
......208.......676........2444..........8836..........31960...........115600
......676......2704.......14161.........66049.........309136..........1485961
.....2444.....14161......103929........630436........4055975.........26388769
.....8836.....66049......630436.......4906225.......40081561........344028304
....31960....309136.....4055975......40081561......442721280.......5286889521
...115600...1485961....26388769.....344028304.....5286889521......87959696400
...418200...7070281...170527280....2916864064....60755627185....1389939607849
..1512900..33686416..1103236225...24655280400...697465500736...21978319114816
..5473500.161417025..7182663455..210761791744..8157711718900..355530634470400
.19802500.772006225.46658160025.1799944224400.95072386757049.5709705914259216
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..542
FORMULA
Empirical for column k:
k=1: a(n) = 5*a(n-1) -25*a(n-3) +25*a(n-4) for n>5
EXAMPLE
Some solutions for n=3 k=4
..0..0..1..1..0..0....0..0..0..0..0..0....0..0..1..1..1..1....0..0..0..1..1..1
..0..1..1..1..1..0....0..1..1..1..1..1....0..1..1..1..0..0....1..1..1..1..0..1
..1..1..1..1..1..1....1..1..1..1..1..1....1..1..1..1..1..1....1..0..1..1..1..1
..1..1..1..1..1..0....1..0..1..1..1..0....0..1..1..1..1..0....1..1..1..1..1..0
..1..1..1..1..1..0....1..1..1..1..1..0....1..0..0..0..1..1....1..0..0..1..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 14 2015
STATUS
approved