|
| |
|
|
A153957
|
|
Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 7 ones in any 5 X 5 X 5 subtriangle.
|
|
0
|
|
|
|
1, 2, 4, 16, 56, 256, 1518, 15896, 171565, 3217779, 58858443, 1927799742, 63170771231, 3671078892600, 213376157401433, 21677971544137049
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,2
|
|
|
LINKS
|
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
