OFFSET
1,1
COMMENTS
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
a(n) = a(n-1) +42*a(n-2) +147*a(n-3) +70*a(n-4) -478*a(n-5) -449*a(n-6) +1199*a(n-7) +732*a(n-8) -2727*a(n-9) +659*a(n-10) +3827*a(n-11) -5776*a(n-12) +3926*a(n-13) -1152*a(n-14) -148*a(n-15) +154*a(n-16) +32*a(n-17) -29*a(n-18) -6*a(n-19) +3*a(n-20) +a(n-21)
EXAMPLE
Some solutions for n=4
..1..0..0..0..0..0....1..0..0..0..0..1....1..0..0..1..0..0....1..0..1..0..0..0
..0..1..0..0..0..1....0..0..0..0..0..0....0..1..0..0..0..0....0..0..0..1..0..0
..0..0..0..1..0..0....1..0..1..0..0..0....0..0..0..0..0..1....0..1..0..0..0..1
..0..0..0..0..0..1....0..0..0..0..0..1....0..1..0..1..0..0....0..0..1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 22 2013
STATUS
approved