|
|
A277762
|
|
Number of n X 3 0..2 arrays with every element equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0) both plus 1 mod 3 and minus 1 mod 3, with new values introduced in order 0..2.
|
|
1
|
|
|
0, 4, 17, 330, 3666, 46289, 560809, 6883464, 84161576, 1030163755, 12605295745, 154256946272, 1887655962034, 23099627259711, 282674025688925, 3459132503499606, 42330011144976582, 517999809756567289
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
|
|
LINKS
|
|
|
FORMULA
|
Empirical: a(n) = 11*a(n-1) +15*a(n-2) -6*a(n-3) +164*a(n-4) -947*a(n-5) +1147*a(n-6) +106*a(n-7) -215*a(n-8) -374*a(n-9) -134*a(n-10) +168*a(n-11).
|
|
EXAMPLE
|
Some solutions for n=4
..0..1..2. .0..1..2. .0..1..0. .0..1..2. .0..1..2. .0..1..2. .0..1..2
..2..1..0. .2..1..0. .2..2..2. .2..1..0. .2..1..0. .2..2..0. .2..0..0
..1..0..1. .1..2..1. .2..1..0. .0..2..0. .1..2..1. .1..0..0. .1..0..1
..2..2..2. .0..2..0. .0..2..2. .1..1..0. .0..0..2. .2..2..1. .1..2..2
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|