A079923 Solution to the Dancing School Problem with n girls and n+4 boys: f(n,4).

5, 21, 76, 246, 738, 2108, 5794, 15458, 40296, 103129, 260019, 647617, 1596800, 3904260, 9479292, 22879520, 54947836, 131406732, 313129592, 743878505, 1762572329, 4167010597, 9832766588, 23164353834

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..24.

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: A271251 A201435 A202507 * A272452 A271088 A271694

Adjacent sequences: A079920 A079921 A079922 * A079924 A079925 A079926

Keyword

nonn

Author

Jaap Spies, Jan 28 2003

Extensions

More terms from Jaap Spies, Dec 14 2006

Status

approved