|
|
A251389
|
|
Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6
|
|
1
|
|
|
19077905, 61210372853, 195833921630923, 627040122137369465, 2007727783867224687619, 6428619222646214779210647, 20584044969991357548445765971, 65908857071343270914359258934351
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=1
..0..0..0..1..2..1..1..1....0..0..0..0..1..2..1..0....0..0..1..1..2..0..1..1
..2..0..2..2..1..0..0..0....2..0..2..2..2..1..0..1....2..0..1..1..0..2..1..2
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|