OFFSET
1,1
COMMENTS
Column 4 of A234832
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 182*a(n-1) -11600*a(n-2) +364517*a(n-3) -6574557*a(n-4) +74167355*a(n-5) -550713612*a(n-6) +2763264852*a(n-7) -9403512254*a(n-8) +21143341630*a(n-9) -28417525706*a(n-10) +11657297214*a(n-11) +38663386597*a(n-12) -104056918812*a(n-13) +134565850437*a(n-14) -58332448151*a(n-15) -136233194984*a(n-16) +312098619191*a(n-17) -313931961777*a(n-18) +175500893116*a(n-19) -48707250480*a(n-20) +560589885*a(n-21) +2754659691*a(n-22) +330478353*a(n-23) -654517260*a(n-24) +209271843*a(n-25) -30114261*a(n-26) +2018601*a(n-27) -59049*a(n-28)
EXAMPLE
Some solutions for n=1
..0..2..2..1..1....2..0..0..2..0....1..0..1..0..1....0..0..2..1..0
..2..2..2..0..1....2..2..2..0..1....2..1..2..1..2....1..2..0..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 31 2013
STATUS
approved