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A145773 Number of n X n binary arrays with all ones connected only either two adjacent vertically or two adjacent horizontally. 1
1, 5, 25, 314, 7358, 349511, 32855368, 6141909014, 2284689480141, 1689669248970784, 2485350221377308028, 7269523179423750332937, 42286820404292801713317670, 489171492515135237008883532896 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A185063 A165656 A370336 * A197195 A358545 A285602
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 18 2008
STATUS
approved

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Last modified March 4 10:39 EST 2024. Contains 370528 sequences. (Running on oeis4.)