OFFSET
1,1
COMMENTS
Diagonal of A223576
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..64
FORMULA
Let U(z) = (z^4+6*z^3+23*z^2+18*z+24)/24
a(n) = U(n) * product{ U(i)^2 , i=1..(n-1) }
EXAMPLE
Some solutions for n=3
..1..0..2....0..2..1....2..1..2....1..0..2....0..0..0....1..2..0....0..0..0
..1..1..2....1..1..1....2..2..0....1..0..1....0..1..0....0..1..0....1..0..2
..1..1..0....0..0..0....2..1..1....0..1..2....1..1..1....2..0..0....0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 22 2013
STATUS
approved