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A047883
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Squares on unbounded chessboard for which the least number of knight's moves from corner (0,0) is n.
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2
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0, 2, 9, 20, 27, 32, 39, 46, 53, 60, 67, 74, 81, 88, 95, 102, 109, 116, 123, 130, 137, 144, 151, 158, 165, 172, 179, 186, 193, 200, 207, 214, 221, 228, 235
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n)=7+a(n-1) for n >= 6.
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MATHEMATICA
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Join[{0, 2, 9, 20, 27}, NestList[#+7&, 32, 30]] (* Harvey P. Dale, Sep 07 2013 *)
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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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