A180758 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A180758

Half the number of nX9 binary arrays with each element equal to at least two neighbors

0, 21, 67, 2059, 41755, 986376, 22238670, 514990479, 11843513563, 273193577866, 6295815062637, 145178091690740, 3347707869286493, 77204310077778551, 1780484848971706031, 41062118413701907548, 946988189894419322573

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 9 of A180760

LINKS

R. H. Hardin, Table of n, a(n) for n=1..99

CROSSREFS

Sequence in context: A168240 A123779 A123839 * A197121 A175461 A272627

Adjacent sequences: A180755 A180756 A180757 * A180759 A180760 A180761

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 20 2010

STATUS

approved