OFFSET
1,1
COMMENTS
Column 2 of A237494
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 20076*a(n-4) -30963114*a(n-8) +17742299774*a(n-12) -4486150673585*a(n-16) +504677649505566*a(n-20) -29356316158732439*a(n-24) +966060370545963788*a(n-28) -18497168436220523153*a(n-32) +198997625891729725690*a(n-36) -1038614063422502404638*a(n-40) +1078455559202968849160*a(n-44) +9561579193839899167904*a(n-48) -32659993350070324019856*a(n-52) +48397569970373697382656*a(n-56) -40369120219890399840128*a(n-60) +24366820699820541125632*a(n-64) -1366745837841586018304*a(n-68) -11349801641134789099520*a(n-72) +4447227527163548532736*a(n-76) -405271925986135375872*a(n-80) for n>82
EXAMPLE
Some solutions for n=2
..3..1..1....1..2..2....0..2..2....3..2..2....2..2..0....0..2..3....2..3..0
..0..1..3....3..2..1....2..0..1....3..2..1....3..1..0....2..2..2....1..1..2
..1..0..1....3..1..0....0..3..0....0..2..3....1..0..3....0..1..1....1..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 08 2014
STATUS
approved