OFFSET
1,1
COMMENTS
Column 3 of A233989
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 152*a(n-2) +150*a(n-3) -8071*a(n-4) -8102*a(n-5) +220582*a(n-6) +154134*a(n-7) -3549162*a(n-8) -957558*a(n-9) +35319910*a(n-10) -6392950*a(n-11) -218035822*a(n-12) +131758738*a(n-13) +804014815*a(n-14) -803217908*a(n-15) -1602211348*a(n-16) +2304441408*a(n-17) +1290558096*a(n-18) -3076728768*a(n-19) +201005888*a(n-20) +1628959232*a(n-21) -560044032*a(n-22) -245846016*a(n-23) +128188416*a(n-24) -7864320*a(n-25)
EXAMPLE
Some solutions for n=3
..0..1..3..2....1..2..1..2....4..3..1..3....0..2..3..4....4..2..4..2
..2..3..2..0....2..4..3..1....2..1..2..4....1..0..1..3....2..1..2..1
..3..1..3..1....1..2..1..0....4..2..4..3....3..2..3..2....1..3..4..3
..2..0..2..0....3..4..3..2....3..4..3..1....1..0..1..3....0..1..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 18 2013
STATUS
approved