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A146188 Number of n X n binary arrays with all ones connected only in a 101-111-100 pattern in any orientation. 0
1, 1, 9, 33, 89, 973, 38577, 1078541, 28644797, 2049754535, 324959092887, 58338532772401, 13434523893685925 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
EXAMPLE
Maximal 8 X 8 example
.1.0.1.0.1.0.1.0
.1.1.1.0.1.1.1.0
.1.0.0.0.1.0.0.1
.0.1.0.1.0.1.1.1
.0.1.1.1.0.1.0.1
.1.0.0.1.0.0.1.0
.1.1.1.0.1.1.1.0
.1.0.1.0.1.0.1.0
CROSSREFS
Sequence in context: A005920 A020324 A146171 * A020228 A005939 A020326
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 27 2008
STATUS
approved

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Last modified May 17 19:53 EDT 2024. Contains 372607 sequences. (Running on oeis4.)