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A064035
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Erroneous version of A006534.
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0
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OFFSET
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1,4
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LINKS
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R. K. Guy, O'Beirne's Hexiamond, in The Mathemagician and the Pied Puzzler - A Collection in Tribute to Martin Gardner, Ed. E. R. Berlekamp and T. Rogers, A. K. Peters, 1999, 85-96.
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CROSSREFS
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KEYWORD
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dead
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STATUS
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approved
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