|
| |
|
|
A075754
|
|
Number of n X n (0,1) matrices containing exactly five 1's in each row and in each column.
|
|
0
|
|
|
|
1, 720, 3110940, 24046189440, 315031400802720, 6736218287430460752, 226885231700215713535680, 11649337108041078980732943360, 885282776210120715086715619724160, 96986285294151066094112970262797953280
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
5,2
|
|
|
REFERENCES
|
B. D. McKay, Applications of a technique for labeled enumeration, Congressus Numerantium, 40 (1983) 207-221.
|
|
|
LINKS
|
Table of n, a(n) for n=5..14.
B. D. McKay, 0-1 matrices with constant row and column sums
E. R. Canfield and B. D. McKay, Asymptotic enumeration of dense 0-1 matrices with equal row and column sums.
Index entries for sequences related to binary matrices
|
|
|
CROSSREFS
|
Cf. A000142, A001499, A001501, A058527, A058528.
Sequence in context: A054779 A030185 A010799 * A143476 A008979 A158044
Adjacent sequences: A075751 A075752 A075753 * A075755 A075756 A075757
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
Michel Buffet (buffet(AT)engref.fr), Oct 08 2002
|
|
|
EXTENSIONS
|
More terms from Brendan McKay, Jan 08 2005
|
|
|
STATUS
|
approved
|
| |
|
|
