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Search: id:A145925
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A145925 Number of n X n binary arrays with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation. +0
1
1, 1, 9, 33, 404, 7941, 262632, 14831415, 1538127410, 275592188347, 87279885007004, 48561755814534966, 47514836691753883015, 81822578894266356858585 (list; graph; listen)
OFFSET

1,3

EXAMPLE

Maximal 8 X 8 example

.1.1.1.0.1.1.1.0

.0.1.0.0.0.1.0.1

.1.0.0.0.0.0.1.1

.1.1.0.1.0.1.0.1

.1.0.1.1.0.1.1.0

.0.0.0.1.0.1.0.1

.1.1.1.0.1.0.1.1

.0.1.0.1.1.1.0.1

CROSSREFS

Adjacent sequences: A145922 A145923 A145924 this_sequence A145926 A145927 A145928

Sequence in context: A013488 A063423 A145952 this_sequence A028568 A044086 A044467

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Oct 25 2008

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Last modified November 8 07:45 EST 2009. Contains 166143 sequences.


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