|
| |
|
|
A051588
|
|
Number of 3 X n binary matrices such that any 2 rows have a common 1.
|
|
5
| |
|
|
0, 1, 15, 175, 1827, 17791, 164955, 1475335, 12844707, 109581871, 920591595, 7643833495, 62904774387, 514168732351, 4180996130235, 33864296127655, 273465115692867, 2203291473841231, 17721094011796875, 142344054436901815
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,3
|
|
|
REFERENCES
| V. Jovovic, G. Kilibarda, On the number of Boolean functions in the Post classes F^{mu}_8, Diskretnaya Matematika, 11 (1999), no. 4, 127-138 (translated in Discrete Mathematics and Applications, 9, (1999), no. 6).
|
|
|
FORMULA
| a(n)=8^n-3*6^n+3*5^n-4^n.
|
|
|
CROSSREFS
| Cf. A005061.
Sequence in context: A082678 A107395 A036083 * A016164 A000482 A145147
Adjacent sequences: A051585 A051586 A051587 * A051589 A051590 A051591
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Vladeta Jovovic, Goran Kilibarda (vladeta(AT)eunet.rs)
|
| |
|
|
