OFFSET
1,1
COMMENTS
Column 2 of A183971
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=13*a(n-1)+6*a(n-2)-340*a(n-3)+1071*a(n-4)-9789*a(n-5)+3558*a(n-6)+198884*a(n-7)-195074*a(n-8)+807678*a(n-9)-1292878*a(n-10)-16344442*a(n-11)+9064862*a(n-12)-11144464*a(n-13)+56949396*a(n-14)+426142724*a(n-15)-212965888*a(n-16)-330277592*a(n-17)-723546572*a(n-18)-2732790952*a(n-19)+2079111480*a(n-20)+1676422016*a(n-21)+2650747888*a(n-22)+4859538688*a(n-23)-6524836608*a(n-24)-3535025280*a(n-25)-1374059520*a(n-26)-1698453504*a(n-27)+6928054272*a(n-28)+2627241984*a(n-29)-2495490048*a(n-30)-1432166400*a(n-31)-1097736192*a(n-32)-49545216*a(n-33)+735215616*a(n-34)+445906944*a(n-35)-95551488*a(n-36)-127401984*a(n-37)
EXAMPLE
Some solutions for 4X3
..0..2..0....2..1..1....1..1..1....1..0..0....2..0..2....0..2..0....2..0..2
..1..0..0....0..2..1....1..0..2....1..1..1....0..2..0....1..1..1....1..2..2
..1..1..2....2..0..2....2..0..1....1..0..1....0..1..0....0..1..0....1..2..1
..2..0..0....2..1..2....1..1..2....2..0..1....2..1..1....1..0..1....1..1..2
...
...3..2.......5..5.......3..4.......3..2.......4..4.......4..4.......5..6...
...3..3.......4..5.......3..3.......3..3.......3..3.......3..3.......6..7...
...4..3.......5..5.......4..4.......3..2.......4..3.......2..2.......5..6...
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2011
STATUS
approved