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A079924
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Solution to the Dancing School Problem with n girls and n+5 boys: f(n,5).
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1
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6, 31, 140, 566, 2104, 7364, 24720, 80196, 253072, 780902, 2365772, 7058469, 20789082, 60560175, 174763208, 500245052, 1421824896, 4016278792, 11283371280, 31547434008, 87827653936, 243578509132, 673221043496
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OFFSET
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1,1
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COMMENTS
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f(g,h) = per(B), the permanent of the (0,1)-matrix B of size g X g+h with b(i,j)=1 if and only if i <= j <= i+h. See A079908 for more information.
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REFERENCES
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Jaap Spies, Dancing School Problems, Nieuw Archief voor Wiskunde 5/7 nr. 4, Dec 2006, pp. 283-285.
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LINKS
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Table of n, a(n) for n=1..23.
Jaap Spies, Dancing School Problems, Permanent solutions of Problem 29.
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CROSSREFS
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Cf. A079908-A079928.
Sequence in context: A267890 A244199 A128568 * A009076 A291396 A012714
Adjacent sequences: A079921 A079922 A079923 * A079925 A079926 A079927
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KEYWORD
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nonn
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AUTHOR
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Jaap Spies, Jan 28 2003
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EXTENSIONS
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More terms Dec 14 2006
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STATUS
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approved
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