OFFSET
2,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 2..9
I. Strazdins, Universal affine classification of Boolean functions, Acta Applic. Math. 46 (1997), 147-167.
FORMULA
a(n) = A002866(2^(n-1)-1).
PROG
(Magma) [(Factorial(2^(n-1)-1))*2^((2^(n-1)-1)-1): n in [2..8]]; // Vincenzo Librandi, Jun 03 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved