OFFSET
1,2
COMMENTS
Also (apparently) number of n X n matrices over GF(2) having permanent = 0. - Hugo Pfoertner, Nov 14 2003
LINKS
FORMULA
MAPLE
for n from 1 to 20 do printf(`%d, `, 2^(n^2) - product(2^n - 2^j, j=0..n-1)) od:
PROG
(PARI) a(n)={2^(n^2) - prod(i=0, n-1, 2^n - 2^i)} \\ Harry J. Smith, Jul 09 2009
CROSSREFS
KEYWORD
nonn
AUTHOR
Ahmed Fares (ahmedfares(AT)my-deja.com), Apr 20 2001
EXTENSIONS
More terms from James A. Sellers, Apr 23 2001
STATUS
approved