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A001366
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Maximal number of unattacked squares with n queens on n X n board (answers for n >= 17 only probable).
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3
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0, 0, 0, 1, 3, 5, 7, 11, 18, 22, 30, 36, 47, 56, 72, 82, 97, 111, 132, 145, 170, 186, 216, 240, 260, 290, 324, 360, 381, 420
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OFFSET
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1,5
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LINKS
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Yanan Jiang and Steven J. Miller, Generalizing Ruth-Aaron Numbers, arXiv:2010.14990 [math.NT], 2020; published in The Pump Journal of Undergraduate Research, 4 (2021), 20-62. [That paper references this sequence entry, probably by mistake; cf. A039752.]
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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Mario Velucchi (mathchess(AT)velucchi.it)
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STATUS
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approved
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