|
Search: id:A060613
|
|
|
| A060613 |
|
Number of n X n {-1,0,1} matrices with no zero rows. |
|
+0
1
|
|
| 2, 64, 17576, 40960000, 829997587232, 148863517207035904, 238534446168822298080896, 3429499272008000182681600000000, 443223773846454955204927262062339154432
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
Harry J. Smith, Table of n, a(n) for n=1,...,45
|
|
FORMULA
|
a(n) = (3^n - 1 )^n
|
|
PROGRAM
|
(PARI) { for (n=1, 45, write("b060613.txt", n, " ", (3^n - 1)^n); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 08 2009]
|
|
CROSSREFS
|
A055601.
Sequence in context: A054956 A155957 A085535 this_sequence A139772 A092238 A003358
Adjacent sequences: A060610 A060611 A060612 this_sequence A060614 A060615 A060616
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ahmed Fares (ahmedfares(AT)my-deja.com), Apr 25 2001
|
|
EXTENSIONS
|
More terms from Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 08 2009
|
|
|
Search completed in 0.002 seconds
|
