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Search: id:A146183
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A146183 Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-111-100 pattern in any orientation. +0
1
1, 1, 1, 1, 5, 17, 43, 197, 1293, 11263, 110807, 1310257, 21564593, 459131585, 12523288493, 440243859565, 19398701026043, 1090842898014815, 79649624560507867, 7542069381975617255, 913933732625520247505 (list; graph; listen)
OFFSET

1,5

EXAMPLE

Maximal 8 X 8 example

.0.0.1.1.1.0.0.0

.0.0.1.1.0.0.0.0

.1.1.0.1.0.0.0.0

.1.1.1.0.0.0.0.1

.1.0.0.0.0.1.1.1

.0.0.0.0.1.0.1.1

.0.0.0.0.1.1.0.0

.0.0.0.1.1.1.0.0

CROSSREFS

Sequence in context: A089527 A146778 A146858 this_sequence A163424 A099451 A133252

Adjacent sequences: A146180 A146181 A146182 this_sequence A146184 A146185 A146186

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Oct 27 2008

page 1

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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