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A134262
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Number of n X n binary matrices with every 1 adjacent to another 1 horizontally or vertically.
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1
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1, 10, 250, 22946, 8222576, 11168045764, 57451983566596, 1121231537486377866, 82999668877677132763564, 23304040481827726137141908956, 24817820869161647380317564563160782
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listen;
history;
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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