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Search: id:A126139
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| A126139 |
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Number of non-rectangular polyominoes with n cells that tile a rectangle with congruent copies. |
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+0
4
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OFFSET
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1,4
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REFERENCES
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S. W. Golomb, Polyominoes, second edition, Chapter 8, pp. 97-110, Princeton University Press, 1994.
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LINKS
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M. Reid, Rectifiable polyomino page.
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FORMULA
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a(n) = A126138(n) - A038548(n).
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CROSSREFS
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Cf. A126138, A126140, A126141.
Sequence in context: A114340 A126102 A011433 this_sequence A060872 A162775 A066959
Adjacent sequences: A126136 A126137 A126138 this_sequence A126140 A126141 A126142
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KEYWORD
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hard,more,nonn
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AUTHOR
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William Rex Marshall (w.r.marshall(AT)actrix.co.nz), Dec 19 2006, Feb 15 2007
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