OFFSET
1,1
COMMENTS
Column 3 of A238997
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 13*a(n-1) +40*a(n-2) -914*a(n-3) +683*a(n-4) +21799*a(n-5) -40268*a(n-6) -255576*a(n-7) +617879*a(n-8) +1651695*a(n-9) -4744854*a(n-10) -5850014*a(n-11) +20400821*a(n-12) +9443201*a(n-13) -49172224*a(n-14) +1794964*a(n-15) +63874690*a(n-16) -34792348*a(n-17) -46269446*a(n-18) +85331340*a(n-19) +19168016*a(n-20) -137730200*a(n-21) +2475600*a(n-22) +191881992*a(n-23) -35419208*a(n-24) -200659312*a(n-25) +29452144*a(n-26) +50974176*a(n-27) -43973440*a(n-28) +100095104*a(n-29) +81128448*a(n-30) -69032960*a(n-31) -38481920*a(n-32) +7651328*a(n-33) +983040*a(n-34) -524288*a(n-35)
EXAMPLE
Some solutions for n=4
..0..0..0....0..3..3....3..0..3....1..1..3....0..1..1....3..3..1....1..0..0
..1..1..3....0..3..2....3..0..2....0..1..0....0..0..0....0..3..0....0..1..0
..0..0..0....1..1..2....1..0..2....0..3..3....1..2..0....3..3..2....0..0..3
..1..1..3....1..2..0....0..3..3....1..2..3....1..0..1....1..2..0....1..1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 08 2014
STATUS
approved