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A079925 Solution to the Dancing School Problem with n girls and n+6 boys: f(n,6). 1
7, 43, 234, 1146, 5150, 21652, 86608, 334072, 1249768, 4557284, 16266830, 57031078, 196933710, 671224467, 2262089361, 7548882573, 24975936372, 82012110724, 267505920876, 867390073384 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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.

REFERENCES

Jaap Spies, Dancing School Problems, Nieuw Archief voor Wiskunde 5/7 nr. 4, Dec 2006, pp. 283-285.

LINKS

Table of n, a(n) for n=1..20.

Jaap Spies, Dancing School Problems, Permanent solutions of Problem 29.

CROSSREFS

Cf. A079908-A079928.

Sequence in context: A027176 A244200 A334241 * A126718 A081896 A193656

Adjacent sequences:  A079922 A079923 A079924 * A079926 A079927 A079928

KEYWORD

nonn

AUTHOR

Jaap Spies, Jan 28 2003

EXTENSIONS

Corrected by Jaap Spies, Feb 01 2004

More terms Dec 14 2006

STATUS

approved

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Last modified August 13 19:30 EDT 2020. Contains 336451 sequences. (Running on oeis4.)