|
|
A147038
|
|
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-0100-1111-0100 pattern in any orientation.
|
|
0
|
|
|
1, 1, 1, 3, 5, 9, 21, 69, 305, 1333, 6087, 37147, 280959, 2501123, 26363255, 322801403, 4679667007, 81403804671, 1686900283495, 41922642406637, 1239283752468159, 43217375654523227, 1785265760870915049, 87797244145177135687
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,4
|
|
LINKS
|
|
|
EXAMPLE
|
Maximal 8 X 8 example
.0.0.1.0.0.0.1.0
.0.0.1.0.1.1.1.1
.1.1.1.1.0.0.1.0
.0.0.1.0.0.0.1.0
.0.1.0.0.0.1.0.0
.0.1.0.0.1.1.1.1
.1.1.1.1.0.1.0.0
.0.1.0.0.0.1.0.0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|