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Search: id:A002881
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| A002881 |
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Number of imperfect squared rectangles of order n.
(Formerly M4614 N1969)
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+0
5
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| 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 9, 34, 104, 283, 957, 3033, 9519
(list; graph; listen)
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OFFSET
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1,12
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COMMENT
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The order of a squared rectangle is the number of squares into which it is divided.
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REFERENCES
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C. J. Bouwkamp, personal communication.
M. Gardner, The 2nd Scientific American Book of Mathematical Puzzles and Diversions. Simon and Schuster, NY, 1961, p. 207.
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LINKS
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Eric Weisstein's World of Mathematics, Perfect Rectangle
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CROSSREFS
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Cf. A006983, A002962, A002839, A014530.
Adjacent sequences: A002878 A002879 A002880 this_sequence A002882 A002883 A002884
Sequence in context: A014816 A000441 A067989 this_sequence A005344 A050478 A119389
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KEYWORD
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hard,nonn
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AUTHOR
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njas
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