|
|
A222335
|
|
Number of nX2 0..6 arrays with no entry increasing mod 7 by 6 rightwards or downwards, starting with upper left zero
|
|
2
|
|
|
6, 186, 5766, 178746, 5541126, 171774906, 5325022086, 165075684666, 5117346224646, 158637732964026, 4917769721884806, 152450861378428986, 4725976702731298566, 146505277784670255546, 4541663611324777921926
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
FORMULA
|
Empirical: a(n) = 31*a(n-1)
|
|
EXAMPLE
|
Some solutions for n=3
..0..4....0..4....0..1....0..3....0..4....0..0....0..4....0..1....0..3....0..0
..1..6....3..1....5..3....5..1....5..6....3..3....1..5....3..5....0..3....3..3
..3..0....5..5....5..1....1..2....5..1....0..0....4..6....5..1....1..6....5..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|