OFFSET
1,1
COMMENTS
Column 5 of A248987
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +10*a(n-5) -10*a(n-6) -31*a(n-10) +31*a(n-11) +26*a(n-15) -26*a(n-16) +8*a(n-20) -8*a(n-21)
EXAMPLE
Some solutions for n=6
..4....2....4....4....5....0....3....3....4....1....1....3....4....0....4....3
..0....3....0....4....4....1....5....5....3....5....1....1....5....4....0....1
..5....2....5....3....2....5....0....2....3....2....5....0....3....5....2....5
..5....2....4....1....0....4....4....5....5....0....3....0....2....4....0....1
..1....1....2....3....4....0....3....5....0....2....5....1....1....2....4....0
..4....2....4....4....5....5....3....3....4....1....1....3....4....5....4....3
..0....3....0....4....4....1....5....5....3....5....1....1....0....4....5....1
..0....2....5....3....2....0....5....2....3....2....0....5....3....5....2....5
..5....2....4....1....0....4....4....5....0....5....3....0....2....4....5....1
..1....1....2....3....4....5....3....5....0....2....5....1....1....2....4....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 18 2014
STATUS
approved