OFFSET
1,1
COMMENTS
Column 5 of A249656
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +9*a(n-5) -9*a(n-6) -26*a(n-10) +26*a(n-11) +25*a(n-15) -25*a(n-16) -a(n-20) +a(n-21) -2*a(n-25) +2*a(n-26)
EXAMPLE
Some solutions for n=6
..3....4....1....4....4....0....5....2....4....3....3....5....0....0....0....4
..5....2....1....2....0....4....2....2....2....3....2....5....0....5....0....2
..5....5....2....1....3....3....0....0....0....0....2....3....0....2....2....3
..3....5....3....0....2....5....1....3....2....4....4....4....4....3....5....2
..4....4....3....3....1....3....2....3....2....5....4....3....1....0....3....4
..3....4....1....4....4....5....0....2....4....3....3....0....0....5....0....4
..5....2....1....2....0....4....2....2....2....3....2....5....0....0....5....2
..0....5....2....1....3....3....5....5....0....0....2....3....0....2....2....3
..3....5....3....5....2....0....1....3....2....4....4....4....4....3....0....2
..4....4....3....3....1....3....2....3....2....5....4....3....1....0....3....4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2014
STATUS
approved