OFFSET
1,1
COMMENTS
Column 3 of A205055
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) +19*a(n-2) -374*a(n-3) +1554*a(n-4) -3313*a(n-5) +2037*a(n-6) +13607*a(n-7) -59774*a(n-8) +133830*a(n-9) -181169*a(n-10) +85068*a(n-11) +288109*a(n-12) -978591*a(n-13) +1883539*a(n-14) -2936585*a(n-15) +4267787*a(n-16) -5889392*a(n-17) +7243591*a(n-18) -7562613*a(n-19) +7078420*a(n-20) -7501425*a(n-21) +10198666*a(n-22) -13740764*a(n-23) +14894742*a(n-24) -12577898*a(n-25) +8938306*a(n-26) -6164409*a(n-27) +4354773*a(n-28) -2816255*a(n-29) +1501042*a(n-30) -672694*a(n-31) +293114*a(n-32) -135385*a(n-33) +58189*a(n-34) -20496*a(n-35) +6012*a(n-36) -1564*a(n-37) +324*a(n-38) -36*a(n-39) for n>43
EXAMPLE
Some solutions for n=4
..1..0..2..1....1..0..2..1....2..2..1..0....2..2..2..0....2..1..0..2
..0..2..0..2....2..0..0..1....1..0..0..0....2..1..1..0....1..2..1..0
..2..0..1..0....2..1..0..0....0..0..0..0....1..0..0..0....0..1..2..1
..0..1..0..1....0..1..1..0....0..0..0..0....0..0..0..0....1..0..1..2
..0..1..2..1....0..0..1..1....0..0..0..0....0..0..0..0....1..2..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 21 2012
STATUS
approved