OFFSET
1,2
COMMENTS
Column 5 of A231049
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 12*a(n-1) +161*a(n-2) +479*a(n-3) -6440*a(n-4) -76243*a(n-5) -10558*a(n-6) +451344*a(n-7) +2020488*a(n-8) -2582232*a(n-9) +385720*a(n-10) -11411116*a(n-11) +16317478*a(n-12) -7836152*a(n-13) +22258694*a(n-14) -43868182*a(n-15) +22620856*a(n-16) -14534462*a(n-17) +58185316*a(n-18) -20490672*a(n-19) -20508996*a(n-20) -30191252*a(n-21) +1794712*a(n-22) +8269896*a(n-23) +5870551*a(n-24) +2241164*a(n-25) -96667*a(n-26) -21533*a(n-27) -650816*a(n-28) -264235*a(n-29) -125314*a(n-30) +61088*a(n-31) +29008*a(n-32) +12576*a(n-33) -1024*a(n-34) -192*a(n-35) -128*a(n-36)
EXAMPLE
Some solutions for n=4
..0..1..2..3..0....0..1..2..1..2....0..3..0..3..2....0..1..2..1..0
..0..3..2..1..2....2..3..2..3..0....2..1..0..1..0....0..3..0..3..0
..0..3..0..3..0....2..1..2..1..2....0..3..0..1..2....2..1..0..3..2
..0..1..2..1..2....2..3..0..3..2....2..1..0..3..2....2..3..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2013
STATUS
approved