A079927 Solution to the Dancing School Problem with n girls and n+8 boys: f(n,8).

9, 73, 536, 3590, 22162, 127604, 693552, 3598120, 17990600, 87396728, 413977192, 1918222840, 8719846960, 38983643908, 171764779170, 747190081890, 3213760467348, 13684132415133, 57742830924831, 241687792906641

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.

Links

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

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

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

Crossrefs

Cf. A079908-A079928.

Sequence in context: A291700 A143571 A244202 * A126641 A346229 A081627

Adjacent sequences: A079924 A079925 A079926 * A079928 A079929 A079930

Keyword

nonn

Author

Jaap Spies, Jan 28 2003

Extensions

Corrected by Jaap Spies, Feb 01 2004

More terms Dec 14 2006

Status

approved