OFFSET
1,1
COMMENTS
Column 3 of A237463
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 470*a(n-4) +2419*a(n-6) -48549*a(n-8) -277524*a(n-10) +2224806*a(n-12) +11809802*a(n-14) -46106374*a(n-16) -217503741*a(n-18) +147268499*a(n-20) +1404157520*a(n-22) +5662879218*a(n-24) +24972218680*a(n-26) -44726237428*a(n-28) -519289513864*a(n-30) -615130724771*a(n-32) +2725302787960*a(n-34) +9039131080340*a(n-36) +6927008664548*a(n-38) -19127697900008*a(n-40) -70018423548104*a(n-42) -107852744211760*a(n-44) -64689865402880*a(n-46) +71110203031424*a(n-48) +220819583526400*a(n-50) +297113956207104*a(n-52) +260890297806336*a(n-54) +156820155511808*a(n-56) +72474393059328*a(n-58) +28320397787136*a(n-60) +7383888560128*a(n-62) +1397778546688*a(n-64) +537880690688*a(n-66) +125204168704*a(n-68) +5955911680*a(n-70) for n>73
EXAMPLE
Some solutions for n=4
..1..1..1..1....1..0..0..0....1..0..1..0....0..0..0..2....1..2..2..0
..2..0..1..2....0..0..0..1....2..2..0..0....2..1..1..0....0..2..1..1
..1..0..0..0....0..0..1..1....2..1..2..1....1..1..0..0....1..0..1..1
..1..0..0..1....1..0..2..0....0..2..2..0....1..0..0..2....0..0..2..0
..1..1..1..1....1..1..1..0....1..0..1..0....2..2..1..2....2..2..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 08 2014
STATUS
approved