OFFSET
1,2
COMMENTS
Column 4 of A231063
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 19*a(n-1) -87*a(n-2) -96*a(n-3) +1323*a(n-4) -858*a(n-5) -7666*a(n-6) +7362*a(n-7) +27116*a(n-8) -22605*a(n-9) -65782*a(n-10) +30708*a(n-11) +96872*a(n-12) +33216*a(n-13) -97603*a(n-14) -160311*a(n-15) +74945*a(n-16) +167168*a(n-17) +3832*a(n-18) -42520*a(n-19) -66621*a(n-20) -36551*a(n-21) +42655*a(n-22) +26735*a(n-23) -3326*a(n-24) -4386*a(n-25) -3303*a(n-26) -438*a(n-27) +676*a(n-28) +173*a(n-29) -22*a(n-30) -16*a(n-31)
EXAMPLE
Some solutions for n=4
..0..1..0..3....0..1..0..1....0..1..2..1....0..3..2..3....0..3..0..1
..3..2..3..2....3..2..1..2....1..2..3..0....1..2..3..0....1..0..3..2
..2..3..0..1....0..1..0..3....0..1..2..1....0..1..2..1....2..1..2..1
..1..2..3..2....3..2..1..0....3..2..3..0....3..2..3..0....3..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2013
STATUS
approved