OFFSET
1,1
COMMENTS
Row 5 of A269052.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 12*a(n-1) +26*a(n-2) -566*a(n-3) -123*a(n-4) +8804*a(n-5) -4121*a(n-6) -59620*a(n-7) +55115*a(n-8) +183692*a(n-9) -256127*a(n-10) -211910*a(n-11) +498819*a(n-12) -48036*a(n-13) -371692*a(n-14) +214008*a(n-15) +43848*a(n-16) -64656*a(n-17) +8640*a(n-18) +5184*a(n-19) -1296*a(n-20) for n>22
EXAMPLE
Some solutions for n=4
..0..1..2..1. .1..0..1..0. .0..1..2..1. .0..0..1..0. .1..1..0..0
..2..1..2..1. .0..0..1..2. .0..1..0..1. .1..2..1..2. .0..0..0..0
..2..1..0..2. .1..0..1..2. .0..1..2..1. .2..2..2..2. .0..0..0..1
..0..1..2..1. .0..0..1..0. .0..1..0..0. .2..1..2..1. .0..0..0..1
..0..1..2..2. .0..0..1..0. .0..0..0..0. .0..1..2..2. .1..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 18 2016
STATUS
approved