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A162109
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Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in strictly increasing order
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1
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2, 4, 9, 56, 499, 8000, 207554, 9382078, 732814910, 101599273769, 25151730678684, 11252735518379960, 9169484084583765409, 13716523699765295956974, 37907229783585348802398136, 194640906178869631364050052914
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OFFSET
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1,1
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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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