OFFSET
1,1
COMMENTS
Row 5 of A232955
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 67*a(n-1) -533*a(n-2) -15660*a(n-3) +183231*a(n-4) +657345*a(n-5) -14397321*a(n-6) +26479475*a(n-7) +308726752*a(n-8) -1394230594*a(n-9) -93496336*a(n-10) +10567010405*a(n-11) -15260787758*a(n-12) -20784722042*a(n-13) +61450333950*a(n-14) -11848262788*a(n-15) -72270718040*a(n-16) +48716606000*a(n-17) +23916567320*a(n-18) -26795989184*a(n-19) -10634656*a(n-20) +4071926912*a(n-21) -391701632*a(n-22) -188446976*a(n-23) +19444224*a(n-24) +1963008*a(n-25) -110592*a(n-26) for n>27
EXAMPLE
Some solutions for n=2
..0..0....0..1....0..2....0..1....0..1....0..1....0..0....0..0....0..1....0..0
..1..0....0..0....3..2....3..1....1..0....0..2....0..2....1..1....3..2....2..2
..2..3....2..2....0..1....3..3....2..0....3..2....2..0....0..0....2..3....2..2
..2..0....2..2....0..1....1..3....1..3....2..2....2..2....0..0....1..0....2..2
..2..2....2..2....3..2....3..1....1..3....2..2....3..3....2..0....0..0....2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2013
STATUS
approved