A147086 - OEIS

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A147086

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 10001-11111 pattern in any orientation.

1, 1, 1, 1, 1, 1, 5, 13, 33, 133, 443, 1649, 9331, 62887, 470664, 4206245, 41999179, 473581733, 6364226039, 101605745953, 1937023317718, 43487285044885, 1131769983108977

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

OFFSET

1,7

LINKS

Table of n, a(n) for n=1..23.

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.0.0.0.0

.0.0.0.1.0.0.0.1

.0.0.0.1.1.1.1.1

.0.1.1.0.0.0.0.0

.0.0.1.0.0.0.0.0

.0.1.1.0.0.0.0.0

CROSSREFS

Sequence in context: A283959 A055426 A146621 * A032406 A146917 A283329

Adjacent sequences: A147083 A147084 A147085 * A147087 A147088 A147089

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved