|
|
A270847
|
|
Number of nXnXn triangular 0..5 arrays with some element plus some adjacent element totalling 5+1, 5 or 5-1 exactly once.
|
|
0
|
|
|
0, 66, 1650, 108348, 15754872, 5805948474, 5281372355106, 11945149897295976, 67197347870563441956, 942226132122315020612652, 32978490136427533663379223282, 2885163807024594872443402033028412
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
.....4........2........0........0........2........3........0........4
....0.3......0.2......0.3......3.0......0.1......4.3......3.5......5.3
...1.0.0....0.0.0....1.0.2....0.0.2....2.1.0....3.4.5....5.5.4....3.4.4
..0.1.1.0..2.1.0.2..0.0.1.1..3.3.0.0..2.0.2.1..4.4.3.5..4.3.5.5..2.5.3.5
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|