OFFSET
1,1
COMMENTS
Column 5 of A221937
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..125
FORMULA
Empirical: a(n) = 139*a(n-1) +1565*a(n-2) -28842*a(n-3) -369727*a(n-4) +1342456*a(n-5) +27113117*a(n-6) +34514978*a(n-7) -1040783248*a(n-8) -752172735*a(n-9) -7514497431*a(n-10) +3813284858*a(n-11) -7857119331*a(n-12) +165551321671*a(n-13) +153295270688*a(n-14) +67167089407*a(n-15) +194143861216*a(n-16) -17802740958*a(n-17) +352253527909*a(n-18) -217093267050*a(n-19) -103711174603*a(n-20) +24768760853*a(n-21) +6245517002*a(n-22) +10757772379*a(n-23) -253702884*a(n-24) -2234119424*a(n-25) +988262416*a(n-26) +31172608*a(n-27) -79610304*a(n-28) +7948800*a(n-29)
EXAMPLE
Some solutions for n=3
..0..4..0..1..2....0..3..1..0..2....0..3..1..0..1....0..3..0..2..1
..0..1..2..1..0....0..2..0..3..0....0..0..2..3..0....0..1..0..1..0
..0..1..1..0..2....1..0..1..1..1....0..2..1..2..0....0..2..3..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 01 2013
STATUS
approved