login
A180769
Half the number of nX9 binary arrays with each element equal to at least one neighbor
1
21, 12377, 3365327, 953982820, 273289411333, 78060898850787, 22310318523546774, 6375989200126477033, 1822180205677117048273, 520757452730725828979262, 148826239836327503673819877
OFFSET
1,1
COMMENTS
Column 9 of A180771
LINKS
CROSSREFS
Sequence in context: A046183 A203674 A250065 * A220643 A185557 A276513
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 20 2010
STATUS
approved