OFFSET
1,1
COMMENTS
Column 2 of A240427
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 8*a(n-1) -20*a(n-2) +34*a(n-3) -84*a(n-4) +92*a(n-5) -68*a(n-6) +222*a(n-7) +13*a(n-8) -251*a(n-9) +25*a(n-10) -495*a(n-11) +485*a(n-12) -44*a(n-13) -180*a(n-14) +554*a(n-15) -648*a(n-16) +14*a(n-17) +152*a(n-18) -190*a(n-19) -140*a(n-20) +397*a(n-21) -273*a(n-22) +75*a(n-23) +167*a(n-24) -136*a(n-25) +27*a(n-26)
EXAMPLE
Some solutions for n=4
..0..0....2..2....3..2....2..0....0..0....3..3....2..0....2..0....2..0....0..2
..3..3....2..2....2..1....2..2....0..2....3..3....0..2....2..2....0..0....2..0
..3..2....0..0....3..1....3..2....0..0....2..1....0..2....2..1....2..2....2..0
..0..3....0..3....0..2....3..3....2..0....3..1....2..2....0..2....2..0....3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 04 2014
STATUS
approved